diff --git a/README.md b/README.md
index 6310fe01..cafc7c38 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Game Maker
+# Feuerwerk
 
 [![game-maker](https://git.nockal.com/meleki/game-maker/actions/workflows/ci.yml/badge.svg?branch=main)](https://git.nockal.com/meleki/game-maker/actions?workflow=ci.yml)
 
@@ -8,7 +8,7 @@ all in one program, all drawn inside a single WebGL canvas.
 
 ![](screenshot.png)
 
-Live: <https://nockal.com/game-maker/> · Widget playground: <https://nockal.com/game-maker/?playground>
+Live: <https://nockal.com/feuerwerk/> · Widget playground: <https://nockal.com/feuerwerk/?playground>
 
 **The documentation is the wiki:** <https://git.nockal.com/meleki/game-maker/wiki> – every concept,
 node, tab and shortcut, plus the architecture and the development workflow. This file is the short
@@ -39,7 +39,7 @@ Node 22 is required.
 
 ```bash
 npm install
-npm run dev          # http://localhost:5175/game-maker/dist/ – API calls are proxied to production
+npm run dev          # http://localhost:5175/feuerwerk/dist/ – API calls are proxied to production
 npm run check        # typecheck + lint + format:check + unit tests – the gate CI runs too
 npm run build        # writes dist/ and regenerates index.html; the folder is what nginx serves
 ```
diff --git a/api/index.php b/api/index.php
index eac1729e..21fba1b1 100644
--- a/api/index.php
+++ b/api/index.php
@@ -2,7 +2,7 @@
 declare(strict_types=1);
 
 /**
- * Game Maker API.
+ * Feuerwerk API.
  *
  * Routing uses the `r` query parameter (e.g. `index.php?r=projects/abc123`) because the
  * site's nginx configuration does not pass PATH_INFO to PHP.
@@ -736,6 +736,6 @@ try {
         default => Response::error('Not found', 404),
     };
 } catch (Throwable $e) {
-    error_log('[game-maker api] ' . $e->getMessage());
+    error_log('[feuerwerk api] ' . $e->getMessage());
     Response::error('Internal server error', 500);
 }
diff --git a/api/lib/Auth.php b/api/lib/Auth.php
index 7da17f4d..bf8be378 100644
--- a/api/lib/Auth.php
+++ b/api/lib/Auth.php
@@ -121,12 +121,12 @@ final class Auth
     }
 
     /**
-     * The path the editor is served under (`/game-maker/`), read off the script rather than
+     * The path the editor is served under (`/feuerwerk/`), read off the script rather than
      * written down: the same checkout answers under a different prefix in CI.
      */
     private static function basePath(): string
     {
-        $script = (string) ($_SERVER['SCRIPT_NAME'] ?? '/game-maker/api/index.php');
+        $script = (string) ($_SERVER['SCRIPT_NAME'] ?? '/feuerwerk/api/index.php');
         $base = dirname(dirname($script));
         return $base === '/' || $base === '\\' || $base === '.' ? '/' : $base . '/';
     }
diff --git a/api/lib/SessionStore.php b/api/lib/SessionStore.php
index 8ea937b1..5fdd14a7 100644
--- a/api/lib/SessionStore.php
+++ b/api/lib/SessionStore.php
@@ -14,7 +14,7 @@ final class SessionStore
     /** How long a login lasts without being used; every request that finds it pushes it out again. */
     public const LIFETIME_SECONDS = 30 * 24 * 60 * 60;
 
-    public const COOKIE = 'game_maker_session';
+    public const COOKIE = 'feuerwerk_session';
 
     public function __construct(private readonly string $dir) {}
 
diff --git a/package-lock.json b/package-lock.json
index 8981a331..bd8d4ee2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
-  "name": "game-maker",
+  "name": "feuerwerk",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "game-maker",
+      "name": "feuerwerk",
       "version": "0.1.0",
       "dependencies": {
         "@dimforge/rapier2d-compat": "^0.20.0",
diff --git a/package.json b/package.json
index 5456cfaf..a19798b7 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "game-maker",
+  "name": "feuerwerk",
   "private": true,
   "version": "0.1.0",
   "type": "module",
diff --git a/src/core/music/ogg.ts b/src/core/music/ogg.ts
index baf1ba1f..5da3d916 100644
--- a/src/core/music/ogg.ts
+++ b/src/core/music/ogg.ts
@@ -25,7 +25,7 @@ export interface OpusStream {
 /** What a page holds at most: 255 lacing values, and so at most a packet of about 64 kB. */
 const MAX_SEGMENTS = 255;
 const SERIAL = 0x6d616b65;
-const VENDOR = 'game-maker';
+const VENDOR = 'feuerwerk';
 
 const CRC_TABLE = (() => {
   const table = new Uint32Array(256);
diff --git a/src/core/site.ts b/src/core/site.ts
new file mode 100644
index 00000000..e7d9cdc5
--- /dev/null
+++ b/src/core/site.ts
@@ -0,0 +1,39 @@
+/** The path the site is served under: the editor, the play page, the API and every data file. */
+export const SITE_PATH = '/feuerwerk/';
+
+/** The API's one entry point. */
+export const API_ENDPOINT = `${SITE_PATH}api/index.php`;
+
+/** Where the uploaded files of one kind are served, e.g. `dataPath('textures')`. */
+export function dataPath(kind: string): string {
+  return `${SITE_PATH}data/${kind}`;
+}
+
+/** The prefix of every `localStorage` key while the editor was called Game Maker. */
+const OLD_KEY_PREFIX = 'game-maker.';
+const KEY_PREFIX = 'feuerwerk.';
+
+type KeyStore = Pick<Storage, 'length' | 'key' | 'getItem' | 'setItem' | 'removeItem'>;
+
+/**
+ * Moves what a browser kept under the old name to the new one: settings, panel sizes, folds and
+ * saves survive the rename. A key the new name already has keeps its value. Answers how many moved.
+ */
+export function moveOldStoredKeys(storage: KeyStore): number {
+  const old: string[] = [];
+  for (let i = 0; i < storage.length; i++) {
+    const key = storage.key(i);
+    if (key?.startsWith(OLD_KEY_PREFIX)) old.push(key);
+  }
+  let moved = 0;
+  for (const key of old) {
+    const value = storage.getItem(key);
+    const renamed = KEY_PREFIX + key.slice(OLD_KEY_PREFIX.length);
+    if (value !== null && storage.getItem(renamed) === null) {
+      storage.setItem(renamed, value);
+      moved++;
+    }
+    storage.removeItem(key);
+  }
+  return moved;
+}
diff --git a/src/core/store/ReleaseStore.ts b/src/core/store/ReleaseStore.ts
index bce3d5b8..91d7592f 100644
--- a/src/core/store/ReleaseStore.ts
+++ b/src/core/store/ReleaseStore.ts
@@ -1,3 +1,5 @@
+import { SITE_PATH } from '../site';
+
 /** A project's released copy as the release dialog shows it (#266). */
 export interface ReleaseSummary {
   /** What the link carries: 32 hex digits, the same for as long as the project stays released. */
@@ -27,7 +29,7 @@ export interface ReleaseStore {
 }
 
 /** The page a released game is played on, next to the editor's own. */
-const PLAY_PAGE = '/game-maker/play.html';
+const PLAY_PAGE = `${SITE_PATH}play.html`;
 
 export function releaseUrl(origin: string, token: string): string {
   return `${origin}${PLAY_PAGE}?game=${token}`;
diff --git a/src/editor/App.ts b/src/editor/App.ts
index 984859ac..8c64a20f 100644
--- a/src/editor/App.ts
+++ b/src/editor/App.ts
@@ -21,10 +21,9 @@ import { Editor } from './Editor';
 import { isDragFrame } from './framePreview';
 import { startPlugins } from './plugins/startPlugins';
 import { CelUploadStore } from './pixelart/celUploadStore';
+import { API_ENDPOINT } from '../core/site';
 import { EditorState } from './state';
 
-const API_ENDPOINT = '/game-maker/api/index.php';
-
 /**
  * Shows the sign-in screen until somebody is signed in, and answers with their name. Returns
  * right away when the session from an earlier visit is still good – which is what lets a
@@ -70,7 +69,7 @@ export async function startEditor(app: Application, root: VStack): Promise<void>
     const { user, role } = await signedInUser(app, root, auth);
     // Who is signed in goes into the window title: the toolbar is crowded enough, and the title is
     // also what tells two tabs on two accounts apart.
-    document.title = `Game Maker – ${user}`;
+    document.title = `Feuerwerk – ${user}`;
     const state = new EditorState();
     // Drawn pictures (#185) are looked up in the project this session holds; the next session
     // installs its own, which is also what lets go of everything the old one had drawn.
@@ -123,7 +122,7 @@ export async function startEditor(app: Application, root: VStack): Promise<void>
    */
   const endSession = async (editor: Editor): Promise<void> => {
     await editor.dispose();
-    document.title = 'Game Maker';
+    document.title = 'Feuerwerk';
     // The console panel is page-wide, the lines in it are not: what one account's project printed
     // is none of the next one's business.
     consoleLog.clear();
diff --git a/src/editor/auth/LoginScreen.ts b/src/editor/auth/LoginScreen.ts
index 3302688b..f90f5a7b 100644
--- a/src/editor/auth/LoginScreen.ts
+++ b/src/editor/auth/LoginScreen.ts
@@ -46,7 +46,7 @@ export class LoginScreen extends VStack {
     this.add(new Spacer(), 1);
 
     const card = new Card();
-    card.add(new Label('Game Maker', { style: 'title' }));
+    card.add(new Label('Feuerwerk', { style: 'title' }));
     card.add(new Label('Sign in to open your projects', { style: 'muted' }));
     card.add(new Spacer(Theme.gap));
 
diff --git a/src/editor/editorRecordingSettings.ts b/src/editor/editorRecordingSettings.ts
index 2e386c2c..a7f348e2 100644
--- a/src/editor/editorRecordingSettings.ts
+++ b/src/editor/editorRecordingSettings.ts
@@ -5,7 +5,7 @@
  */
 import { editorRecordingSettingsOf, type EditorRecordingSettings } from '../core/recording/editorRecording';
 
-const STORAGE_KEY = 'game-maker.editor-recording';
+const STORAGE_KEY = 'feuerwerk.editor-recording';
 
 let kept: EditorRecordingSettings | null = null;
 
diff --git a/src/editor/generalSettings.ts b/src/editor/generalSettings.ts
index 38792eaf..fdce7522 100644
--- a/src/editor/generalSettings.ts
+++ b/src/editor/generalSettings.ts
@@ -5,7 +5,7 @@
  */
 import { clamp } from '../ui/math';
 
-const STORAGE_KEY = 'game-maker.general-settings';
+const STORAGE_KEY = 'feuerwerk.general-settings';
 
 export interface GeneralSettings {
   /** How long a zoom takes to reach its new step, in ms; 0 jumps at once. */
diff --git a/src/editor/panelSizes.ts b/src/editor/panelSizes.ts
index 7b73ab89..6129736e 100644
--- a/src/editor/panelSizes.ts
+++ b/src/editor/panelSizes.ts
@@ -5,7 +5,7 @@
  */
 import { clamp } from '../ui/math';
 
-const STORAGE_KEY = 'game-maker.panel-sizes';
+const STORAGE_KEY = 'feuerwerk.panel-sizes';
 
 let sizes: Map<string, number> | null = null;
 
diff --git a/src/editor/saves.ts b/src/editor/saves.ts
index af83ba3a..53a5b115 100644
--- a/src/editor/saves.ts
+++ b/src/editor/saves.ts
@@ -24,7 +24,7 @@ function browserStore(): Store | null {
 }
 
 export function saveKey(projectId: string, area: SaveAreaName): string {
-  return `game-maker.saves.${projectId}.${area}`;
+  return `feuerwerk.saves.${projectId}.${area}`;
 }
 
 function readArea(store: Store | null, key: string): SavedValues {
diff --git a/src/editor/sectionFolds.ts b/src/editor/sectionFolds.ts
index 9d7c64b2..17129a66 100644
--- a/src/editor/sectionFolds.ts
+++ b/src/editor/sectionFolds.ts
@@ -5,7 +5,7 @@
  */
 import { Theme } from '../ui/Theme';
 
-const STORAGE_KEY = 'game-maker.folded-sections';
+const STORAGE_KEY = 'feuerwerk.folded-sections';
 
 let folded: Set<string> | null = null;
 
diff --git a/src/editor/song/SongEditor.ts b/src/editor/song/SongEditor.ts
index 9407ffbd..4c3f7ba1 100644
--- a/src/editor/song/SongEditor.ts
+++ b/src/editor/song/SongEditor.ts
@@ -53,7 +53,7 @@ const INFO_WIDTH = 200;
 const GRID_WIDTH = 64;
 const INPUT_WIDTH = 104;
 /** Where the browser keeps the input picked last. */
-const INPUT_KEY = 'game-maker.record-input';
+const INPUT_KEY = 'feuerwerk.record-input';
 
 /** What the tab shows below its header: the tracks along time, or where they go (#350). */
 export type SongView = 'timeline' | 'routing';
diff --git a/src/editor/video/VideoCanvas.ts b/src/editor/video/VideoCanvas.ts
index d12cf5c9..204c2194 100644
--- a/src/editor/video/VideoCanvas.ts
+++ b/src/editor/video/VideoCanvas.ts
@@ -40,7 +40,7 @@ import {
   zoomWave,
 } from '../sound/waveView';
 import { soundLibrary } from '../../viewport/SoundLibrary';
-import { openVideo } from '../../viewport/VideoLibrary';
+import { openVideo, videoFileUrl } from '../../viewport/VideoLibrary';
 import { chaseSeeks, seekChase, type SeekChase, seekVideo } from '../../viewport/videoSeek';
 import type { EditorState } from '../state';
 import { containRect } from '../texture/imageGrid';
@@ -376,7 +376,7 @@ export class VideoCanvas extends Widget {
       chase: seekChase(),
       asked: held,
       gain: null,
-      element: openVideo(`/game-maker/data/videos/${asset.file}`, held, (texture) => {
+      element: openVideo(videoFileUrl(asset.file), held, (texture) => {
         if (this.preview !== preview) return texture.destroy(true);
         preview.texture = texture;
         texture.source.on('update', () => this.invalidate());
diff --git a/src/page.ts b/src/page.ts
index ee163eb1..ba3f8710 100644
--- a/src/page.ts
+++ b/src/page.ts
@@ -1,6 +1,7 @@
 import { Application, Container } from 'pixi.js';
 import { initPixelGrid, initRenderLoop, initUI, loadEditorFonts, Theme, tieBreakFor, VStack } from './ui';
 import { fixedPageSize, type PageSize, placePage } from './ui/pageSize';
+import { moveOldStoredKeys } from './core/site';
 
 // `desynchronized` bypasses the compositor queue (headless click-to-paint 72 → 16 ms) but may
 // tear; `?vsync` opts out. Pixi has no option for it, hence our own context.
@@ -21,6 +22,11 @@ function lowLatencyContext(): { canvas?: HTMLCanvasElement; context?: WebGL2Rend
  * window and follows it when it is resized, unless `?w=&h=` give it a fixed size.
  */
 export async function createPage(params: URLSearchParams): Promise<{ app: Application; root: VStack }> {
+  try {
+    moveOldStoredKeys(window.localStorage);
+  } catch {
+    // A browser that refuses `localStorage` has nothing to move.
+  }
   const fonts = loadEditorFonts();
   const fixed = fixedPageSize(params);
   const app = new Application();
diff --git a/src/play.ts b/src/play.ts
index 4600d37e..ca88f4c6 100644
--- a/src/play.ts
+++ b/src/play.ts
@@ -15,8 +15,7 @@ import { projectPictureFactory } from './viewport/generatedPictures';
 import { preloadProjectFiles, setUpProjectFiles } from './viewport/projectFiles';
 import { textureLibrary } from './viewport/TextureLibrary';
 import { createEmptyProject } from './core/model/Project';
-
-const API_ENDPOINT = '/game-maker/api/index.php';
+import { API_ENDPOINT } from './core/site';
 
 async function main(): Promise<void> {
   const params = new URLSearchParams(location.search);
diff --git a/src/player/playerHook.ts b/src/player/playerHook.ts
index 24ddc5c0..c8c221ea 100644
--- a/src/player/playerHook.ts
+++ b/src/player/playerHook.ts
@@ -3,12 +3,12 @@ import type { GameScreen } from './GameScreen';
 import type { Player } from './Player';
 
 /**
- * `window.__gameMakerPlay`: what the check scripts read off a released game (#266). The editor's
+ * `window.__feuerwerkPlay`: what the check scripts read off a released game (#266). The editor's
  * `__gm` is not on this page, and neither is anything it would have to reach into. Installed before
  * the game is loaded, so a link that leads nowhere can be read as well: `player` is null until then.
  */
 export function installPlayerHook(screen: GameScreen, player: () => Player | null): void {
-  (window as unknown as { __gameMakerPlay: unknown }).__gameMakerPlay = {
+  (window as unknown as { __feuerwerkPlay: unknown }).__feuerwerkPlay = {
     running: () => player()?.isRunning ?? false,
     screen: () => screen.info(),
     log: () => player()?.log() ?? [],
diff --git a/src/playground.ts b/src/playground.ts
index 06626cfd..41e86590 100644
--- a/src/playground.ts
+++ b/src/playground.ts
@@ -119,7 +119,7 @@ export function mountPlayground(app: Application, root: VStack): void {
   listPanel.content.add(scroll, 1);
   row.add(listPanel, 1);
 
-  root.add(new Label('Game Maker – UI playground', { style: 'bodyBold', padding: Theme.padding }));
+  root.add(new Label('Feuerwerk – UI playground', { style: 'bodyBold', padding: Theme.padding }));
   root.add(row, 1);
   root.add(status);
   root.resize(app.screen.width, app.screen.height);
diff --git a/src/viewport/FontLibrary.ts b/src/viewport/FontLibrary.ts
index 4b22a4a5..b70375da 100644
--- a/src/viewport/FontLibrary.ts
+++ b/src/viewport/FontLibrary.ts
@@ -1,4 +1,5 @@
 import { fontFamilyOf } from '../core/model/font';
+import { dataPath } from '../core/site';
 import { FileLibrary } from './FileLibrary';
 
 /**
@@ -9,7 +10,7 @@ class FontLibrary extends FileLibrary<FontFace> {
   private readonly ready = new Set<string>();
 
   constructor() {
-    super('/game-maker/data/fonts', 'fonts');
+    super(dataPath('fonts'), 'fonts');
   }
 
   /**
diff --git a/src/viewport/PixelCels.ts b/src/viewport/PixelCels.ts
index b8741969..8596dc14 100644
--- a/src/viewport/PixelCels.ts
+++ b/src/viewport/PixelCels.ts
@@ -1,6 +1,7 @@
 import type { Project } from '../core/model/Project';
 import { celFilesOf } from '../core/model/pixelart';
 import { type CelPixels, celFileName, decodeCel, encodeCel, isEmptyCel } from '../core/model/pixelCel';
+import { dataPath } from '../core/site';
 import { FileLibrary } from './FileLibrary';
 
 /** Where cels go on the server: raw bytes in, the stored name back. */
@@ -20,7 +21,7 @@ export class PixelCels extends FileLibrary<CelPixels> {
   private readonly local = new Set<string>();
 
   constructor() {
-    super('/game-maker/data/pixels', 'pixels');
+    super(dataPath('pixels'), 'pixels');
   }
 
   /**
diff --git a/src/viewport/RecordingTake.ts b/src/viewport/RecordingTake.ts
index e54423fa..7aa53fab 100644
--- a/src/viewport/RecordingTake.ts
+++ b/src/viewport/RecordingTake.ts
@@ -408,7 +408,7 @@ export class Take {
           }
         : null,
       durationMs: this.lastMs + frame,
-      app: 'game-maker',
+      app: 'feuerwerk',
     });
     this.collect();
     const blob = new Blob([head, ...this.folded, ...this.loose, ...rest] as BlobPart[], {
diff --git a/src/viewport/SoundLibrary.ts b/src/viewport/SoundLibrary.ts
index 80877e95..33307e17 100644
--- a/src/viewport/SoundLibrary.ts
+++ b/src/viewport/SoundLibrary.ts
@@ -16,6 +16,7 @@ import {
   stageLatency,
 } from '../core/soundfx/nodes';
 import { releaseTime } from '../core/instrument/envelope';
+import { dataPath } from '../core/site';
 import type { EaseShare } from '../core/model/animation';
 import { BAKE_RATE } from '../core/music/bake';
 import {
@@ -66,7 +67,7 @@ import { wake } from './wake';
 /** A voice is no louder than a sound item of a song turned all the way up. */
 const MAX_VOLUME = dbToGain(SOUND_ITEM_MAX_DB);
 
-const DEFAULT_BASE = '/game-maker/data/sounds';
+const DEFAULT_BASE = dataPath('sounds');
 /** The rate a sound loaded ahead of its first play is decoded at; a source resamples it on the way out. */
 const DECODE_RATE = 48000;
 /** The rate the picture of a streamed sound is decoded at (#349): enough for its peaks, a sixth of the size. */
diff --git a/src/viewport/TextureLibrary.ts b/src/viewport/TextureLibrary.ts
index d66865fc..b258fce8 100644
--- a/src/viewport/TextureLibrary.ts
+++ b/src/viewport/TextureLibrary.ts
@@ -3,6 +3,7 @@ import { isGeneratedFile } from '../core/model/generated';
 import { isVideoKey } from '../core/model/video';
 import type { FrameRect, TextureRef } from '../core/model/texture';
 import { type EdgeMode, SHEET_EDGE } from '../core/shader/nodes';
+import { dataPath } from '../core/site';
 import { FileLibrary } from './FileLibrary';
 import { GeneratedPictures, type PictureFactory } from './generatedPictures';
 import { videoLibrary } from './VideoLibrary';
@@ -46,7 +47,7 @@ export class TextureLibrary extends FileLibrary<Texture> {
   );
 
   constructor() {
-    super('/game-maker/data/textures', 'textures');
+    super(dataPath('textures'), 'textures');
     videoLibrary.onChange(() => this.notifyChange());
   }
 
diff --git a/src/viewport/VideoLibrary.ts b/src/viewport/VideoLibrary.ts
index ec4bc89a..88c34e10 100644
--- a/src/viewport/VideoLibrary.ts
+++ b/src/viewport/VideoLibrary.ts
@@ -12,6 +12,7 @@
  */
 import { Assets, Texture, VideoSource } from 'pixi.js';
 import type { PropertyBag } from '../core/model/Properties';
+import { dataPath } from '../core/site';
 import type { TextureRef } from '../core/model/texture';
 import {
   drivenTimeOf,
@@ -27,7 +28,7 @@ import { soundLibrary } from './SoundLibrary';
 import { followVideo, readSpeed, type SpeedReading } from './videoFollow';
 import { chaseSeeks, seekVideo, type SeekChase } from './videoSeek';
 
-const VIDEO_BASE = '/game-maker/data/videos';
+const VIDEO_BASE = dataPath('videos');
 
 /** Where the MP4 of a video asset's `file` is served. */
 export function videoFileUrl(file: string): string {
diff --git a/src/viewport/projectFiles.ts b/src/viewport/projectFiles.ts
index 85d32ff0..ea322f42 100644
--- a/src/viewport/projectFiles.ts
+++ b/src/viewport/projectFiles.ts
@@ -1,5 +1,6 @@
 import type { Renderer } from 'pixi.js';
 import type { Project } from '../core/model/Project';
+import { dataPath } from '../core/site';
 import { projectFiles } from '../core/model/projectFiles';
 import { clipCopyTable, streamTable } from '../core/music/streams';
 import { requestRender } from '../ui';
@@ -14,10 +15,10 @@ import { installVectorArtPictures } from './vectorArtPicture';
  * Where uploaded images live: the API writes them, the browser reads them straight off disk as
  * static files named by their content hash. Fonts and sounds work the same way, one directory over.
  */
-const TEXTURE_BASE = '/game-maker/data/textures';
-const FONT_BASE = '/game-maker/data/fonts';
-const SOUND_BASE = '/game-maker/data/sounds';
-const PIXEL_BASE = '/game-maker/data/pixels';
+const TEXTURE_BASE = dataPath('textures');
+const FONT_BASE = dataPath('fonts');
+const SOUND_BASE = dataPath('sounds');
+const PIXEL_BASE = dataPath('pixels');
 
 /**
  * Points the file libraries at the server, once per page: the editor's and a released game's (#266).
diff --git a/src/viewport/takeRecorder.ts b/src/viewport/takeRecorder.ts
index 62dfecc9..5958e149 100644
--- a/src/viewport/takeRecorder.ts
+++ b/src/viewport/takeRecorder.ts
@@ -109,7 +109,7 @@ export class TakeRecorder {
       await loadWorklet(context);
       if (context.state === 'suspended') await context.resume();
       const source = context.createMediaStreamSource(stream);
-      const node = new AudioWorkletNode(context, 'game-maker-take', {
+      const node = new AudioWorkletNode(context, 'feuerwerk-take', {
         numberOfInputs: 1,
         numberOfOutputs: 1,
         outputChannelCount: [1],
diff --git a/src/viewport/takeWorklet.ts b/src/viewport/takeWorklet.ts
index 815f12a0..0574239a 100644
--- a/src/viewport/takeWorklet.ts
+++ b/src/viewport/takeWorklet.ts
@@ -49,4 +49,4 @@ class TakeProcessor extends AudioWorkletProcessor {
   }
 }
 
-registerProcessor('game-maker-take', TakeProcessor);
+registerProcessor('feuerwerk-take', TakeProcessor);
diff --git a/tests/core/matroska.test.ts b/tests/core/matroska.test.ts
index daa90b9c..3991e209 100644
--- a/tests/core/matroska.test.ts
+++ b/tests/core/matroska.test.ts
@@ -80,7 +80,7 @@ const HEAD: MatroskaHead = {
   },
   audio: { channels: 2, private: new TextEncoder().encode('OpusHead'), preSkip: 312 },
   durationMs: 1234.5,
-  app: 'game-maker',
+  app: 'feuerwerk',
 };
 
 /** The whole file: the head, then the clusters handed out before (`earlier`) and at the end. */
diff --git a/tests/core/releases.test.ts b/tests/core/releases.test.ts
index f3016eb5..d8f57ece 100644
--- a/tests/core/releases.test.ts
+++ b/tests/core/releases.test.ts
@@ -34,7 +34,7 @@ beforeAll(async () => {
 describe('the link of a release', () => {
   it('leads to the play page with the token, and the play page reads it back', () => {
     const url = releaseUrl('https://nockal.com', TOKEN);
-    expect(url).toBe(`https://nockal.com/game-maker/play.html?game=${TOKEN}`);
+    expect(url).toBe(`https://nockal.com/feuerwerk/play.html?game=${TOKEN}`);
     expect(releaseToken(new URL(url).search)).toBe(TOKEN);
   });
 
diff --git a/tests/core/site.test.ts b/tests/core/site.test.ts
new file mode 100644
index 00000000..1de1556c
--- /dev/null
+++ b/tests/core/site.test.ts
@@ -0,0 +1,50 @@
+import { describe, expect, it } from 'vitest';
+import { API_ENDPOINT, dataPath, moveOldStoredKeys } from '../../src/core/site';
+
+function memoryStore(initial: Record<string, string>) {
+  const items = new Map(Object.entries(initial));
+  return {
+    items,
+    get length() {
+      return items.size;
+    },
+    key: (i: number) => [...items.keys()][i] ?? null,
+    getItem: (key: string) => items.get(key) ?? null,
+    setItem: (key: string, value: string) => void items.set(key, value),
+    removeItem: (key: string) => void items.delete(key),
+  };
+}
+
+describe('site', () => {
+  it('serves the API and the data files under /feuerwerk/', () => {
+    expect(API_ENDPOINT).toBe('/feuerwerk/api/index.php');
+    expect(dataPath('textures')).toBe('/feuerwerk/data/textures');
+  });
+
+  it('moves the keys stored under the old name and leaves the others alone', () => {
+    const store = memoryStore({
+      'game-maker.panel-sizes': '{"left":300}',
+      'game-maker.saves.p1.Savegame': '{"Lives":2}',
+      'other-site.key': 'x',
+    });
+    expect(moveOldStoredKeys(store)).toBe(2);
+    expect(Object.fromEntries(store.items)).toEqual({
+      'feuerwerk.panel-sizes': '{"left":300}',
+      'feuerwerk.saves.p1.Savegame': '{"Lives":2}',
+      'other-site.key': 'x',
+    });
+  });
+
+  it('keeps a value the new name already has and drops the old one', () => {
+    const store = memoryStore({ 'game-maker.general-settings': 'old', 'feuerwerk.general-settings': 'new' });
+    expect(moveOldStoredKeys(store)).toBe(0);
+    expect(Object.fromEntries(store.items)).toEqual({ 'feuerwerk.general-settings': 'new' });
+  });
+
+  it('does nothing the second time', () => {
+    const store = memoryStore({ 'game-maker.folded-sections': '[]' });
+    moveOldStoredKeys(store);
+    expect(moveOldStoredKeys(store)).toBe(0);
+    expect(Object.fromEntries(store.items)).toEqual({ 'feuerwerk.folded-sections': '[]' });
+  });
+});
diff --git a/tests/editor/panel-sizes.test.ts b/tests/editor/panel-sizes.test.ts
index 93b0080c..eaaea08e 100644
--- a/tests/editor/panel-sizes.test.ts
+++ b/tests/editor/panel-sizes.test.ts
@@ -2,7 +2,7 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { keepPanelSize, panelSize, resetPanelSizes } from '../../src/editor/panelSizes';
 
-const STORAGE_KEY = 'game-maker.panel-sizes';
+const STORAGE_KEY = 'feuerwerk.panel-sizes';
 
 function memoryStore(initial: Record<string, string> = {}) {
   const items = new Map(Object.entries(initial));
diff --git a/tests/editor/sections.test.ts b/tests/editor/sections.test.ts
index 4124db86..4a30c07c 100644
--- a/tests/editor/sections.test.ts
+++ b/tests/editor/sections.test.ts
@@ -264,7 +264,7 @@ describe('the memory of folded groups', () => {
     setFolded(key, true);
     expect(isFolded(key)).toBe(true);
     resetFolds();
-    vi.stubGlobal('window', { localStorage: memoryStore({ 'game-maker.folded-sections': '{broken' }) });
+    vi.stubGlobal('window', { localStorage: memoryStore({ 'feuerwerk.folded-sections': '{broken' }) });
     expect(isFolded(key)).toBe(false);
   });
 
diff --git a/tests/editor/view-tween.test.ts b/tests/editor/view-tween.test.ts
index 1ed6b89c..01787e8d 100644
--- a/tests/editor/view-tween.test.ts
+++ b/tests/editor/view-tween.test.ts
@@ -405,7 +405,7 @@ describe('the general settings', () => {
     keepGeneralSettings({ zoomTransitionMs: 350 });
     resetGeneralSettings();
     expect(generalSettings().zoomTransitionMs).toBe(350);
-    expect(JSON.parse(store.items.get('game-maker.general-settings') ?? '')).toEqual({
+    expect(JSON.parse(store.items.get('feuerwerk.general-settings') ?? '')).toEqual({
       zoomTransitionMs: 350,
       showEmptyAssetGroups: false,
       customCursor: true,
@@ -437,7 +437,7 @@ describe('the general settings', () => {
     resetGeneralSettings();
     expect(generalSettings().customCursor).toBe(false);
     // Settings kept before the switch existed show it.
-    store.setItem('game-maker.general-settings', JSON.stringify({ zoomTransitionMs: 100 }));
+    store.setItem('feuerwerk.general-settings', JSON.stringify({ zoomTransitionMs: 100 }));
     resetGeneralSettings();
     expect(generalSettings().customCursor).toBe(true);
   });
diff --git a/tests/php/accounts.test.php b/tests/php/accounts.test.php
index 7e2a9e94..d5229ed5 100644
--- a/tests/php/accounts.test.php
+++ b/tests/php/accounts.test.php
@@ -40,7 +40,7 @@ function throws(callable $work, string $class = InvalidArgumentException::class)
     return false;
 }
 
-$dir = sys_get_temp_dir() . '/game-maker-php-test-' . bin2hex(random_bytes(4));
+$dir = sys_get_temp_dir() . '/feuerwerk-php-test-' . bin2hex(random_bytes(4));
 mkdir($dir);
 $file = "{$dir}/users.json";
 
diff --git a/tests/php/files.test.php b/tests/php/files.test.php
index bab02496..276dba99 100644
--- a/tests/php/files.test.php
+++ b/tests/php/files.test.php
@@ -35,7 +35,7 @@ function wav(string $tag): string
     return 'RIFF' . pack('V', 36) . 'WAVE' . str_repeat("\0", 32) . $tag;
 }
 
-$data = sys_get_temp_dir() . '/game-maker-php-files-' . bin2hex(random_bytes(4));
+$data = sys_get_temp_dir() . '/feuerwerk-php-files-' . bin2hex(random_bytes(4));
 mkdir("{$data}/projects", 0775, true);
 $users = new UserStore("{$data}/users.json");
 $users->put('ann', 'password1');
diff --git a/tests/php/releases.test.php b/tests/php/releases.test.php
index ebb41db9..cdc465b9 100644
--- a/tests/php/releases.test.php
+++ b/tests/php/releases.test.php
@@ -25,7 +25,7 @@ function check(string $name, bool $ok, mixed $got = null): void
     echo "FAIL  {$name}", $got === null ? '' : ' — got ' . json_encode($got), "\n";
 }
 
-$dir = sys_get_temp_dir() . '/game-maker-php-releases-' . bin2hex(random_bytes(4));
+$dir = sys_get_temp_dir() . '/feuerwerk-php-releases-' . bin2hex(random_bytes(4));
 mkdir($dir);
 $releases = new ReleaseStore($dir);
 
diff --git a/tests/php/snapshots.test.php b/tests/php/snapshots.test.php
index 63704886..8b2cd1b4 100644
--- a/tests/php/snapshots.test.php
+++ b/tests/php/snapshots.test.php
@@ -25,7 +25,7 @@ function check(string $name, bool $ok, mixed $got = null): void
     echo "FAIL  {$name}", $got === null ? '' : ' — got ' . json_encode($got), "\n";
 }
 
-$dir = sys_get_temp_dir() . '/game-maker-php-snapshots-' . bin2hex(random_bytes(4));
+$dir = sys_get_temp_dir() . '/feuerwerk-php-snapshots-' . bin2hex(random_bytes(4));
 mkdir($dir);
 $snapshots = new SnapshotStore($dir);
 
diff --git a/tests/php/videos.test.php b/tests/php/videos.test.php
index 27fbb297..12b896be 100644
--- a/tests/php/videos.test.php
+++ b/tests/php/videos.test.php
@@ -82,7 +82,7 @@ check('other lines say nothing', VideoFormat::progress('frame=12', 10.0) === nul
 check('progress never passes the end', VideoFormat::progress('out_time_us=99000000', 10.0) === 1.0);
 
 // The store and its queue.
-$data = sys_get_temp_dir() . '/game-maker-php-videos-' . bin2hex(random_bytes(4));
+$data = sys_get_temp_dir() . '/feuerwerk-php-videos-' . bin2hex(random_bytes(4));
 $store = new VideoStore("{$data}/videos");
 $folder = 'a1b2c3d4e5f6';
 $rejected = static function (string $bytes) use ($store, $folder): bool {
diff --git a/tools/ci/router.php b/tools/ci/router.php
index 6238181f..253fe872 100644
--- a/tools/ci/router.php
+++ b/tools/ci/router.php
@@ -5,7 +5,7 @@
 // the server as before.
 
 $path = rawurldecode((string) parse_url($_SERVER['REQUEST_URI'] ?? '', PHP_URL_PATH));
-if (!preg_match('#^/game-maker/data/videos/[0-9a-z]+/[0-9a-f]{64}\.mp4$#', $path)) {
+if (!preg_match('#^/feuerwerk/data/videos/[0-9a-z]+/[0-9a-f]{64}\.mp4$#', $path)) {
     return false;
 }
 $file = $_SERVER['DOCUMENT_ROOT'] . $path;
diff --git a/tools/ci/run-e2e.sh b/tools/ci/run-e2e.sh
index b19cc9a2..531a2ef3 100755
--- a/tools/ci/run-e2e.sh
+++ b/tools/ci/run-e2e.sh
@@ -5,7 +5,7 @@ set -euo pipefail
 
 cd "$(dirname "$(readlink -f "$0")")/../.."
 source tools/ci/serve.sh
-game_maker_serve
+feuerwerk_serve
 
 set +e
 node tools/seed-e2e.mjs && node tools/e2e.mjs
diff --git a/tools/ci/run-smokes.sh b/tools/ci/run-smokes.sh
index 4d75bc98..60c74f5e 100755
--- a/tools/ci/run-smokes.sh
+++ b/tools/ci/run-smokes.sh
@@ -5,7 +5,7 @@ set -euo pipefail
 
 cd "$(dirname "$(readlink -f "$0")")/../.."
 source tools/ci/serve.sh
-game_maker_serve
+feuerwerk_serve
 
 set +e
 code=0
diff --git a/tools/ci/serve.sh b/tools/ci/serve.sh
index 3a967f10..40163adb 100644
--- a/tools/ci/serve.sh
+++ b/tools/ci/serve.sh
@@ -2,12 +2,12 @@
 # Sourced, not run: it leaves the PHP server in the caller's background and exports
 # GAME_MAKER_BASE_URL, which every tool reads.
 #
-# The build wires its assets absolutely under /game-maker/dist/, so the checkout has to be
+# The build wires its assets absolutely under /feuerwerk/dist/, so the checkout has to be
 # served under that path segment – hence the symlink into /srv rather than `-t .`.
 
-export GAME_MAKER_BASE_URL=http://127.0.0.1:8080/game-maker/
+export GAME_MAKER_BASE_URL=http://127.0.0.1:8080/feuerwerk/
 
-game_maker_serve() {
+feuerwerk_serve() {
   local root
   root=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
 
@@ -35,7 +35,7 @@ game_maker_serve() {
     return 0
   fi
 
-  mkdir -p /srv && ln -sfn "$root" /srv/game-maker
+  mkdir -p /srv && ln -sfn "$root" /srv/feuerwerk
   # Uploaded videos are converted by the worker (#402); on stein2 that is the container
   # game-maker-video, here a process beside the server.
   php "$root/tools/video-worker.php" "$root/data" >/tmp/video-worker.log 2>&1 &
diff --git a/tools/e2e/02-inspector.mjs b/tools/e2e/02-inspector.mjs
index 9145b17b..4da1b7ef 100644
--- a/tools/e2e/02-inspector.mjs
+++ b/tools/e2e/02-inspector.mjs
@@ -71,7 +71,7 @@ export async function inspector(t) {
     JSON.stringify({ switches: switches?.y, enabled: enabledRow?.y, position: position?.y }),
   );
   // A click on the band folds the group: its rows go, and the next band moves up against it.
-  const folds = () => json(`localStorage.getItem('game-maker.folded-sections')`);
+  const folds = () => json(`localStorage.getItem('feuerwerk.folded-sections')`);
   await click(transform.x, transform.y);
   await settle();
   transform = await section('TRANSFORM');
diff --git a/tools/e2e/03-play.mjs b/tools/e2e/03-play.mjs
index 82c91bfc..c9a66e8c 100644
--- a/tools/e2e/03-play.mjs
+++ b/tools/e2e/03-play.mjs
@@ -314,7 +314,7 @@ export async function play(t) {
     Math.abs(frame.x + frame.w / 2 - (view.x + view.w / 2)) <= 1 &&
     Math.abs(frame.y + frame.h / 2 - (view.y + view.h / 2)) <= 1;
   const undoSteps = () => json('__gm.state.commands.undoStack.length');
-  await evaluate(`localStorage.removeItem('game-maker.editor')`);
+  await evaluate(`localStorage.removeItem('feuerwerk.editor')`);
   const stepsBefore = await undoSteps();
   let g = await scale();
   const crateAt100 = (await json(`__gm.gameRect('o1')`)).w;
@@ -364,7 +364,7 @@ export async function play(t) {
   check(
     'the scale is saved with the project (#226), not in this browser, and is no undo step',
     (await json('__gm.state.project.gameScale')) === 'auto' &&
-      (await evaluate(`localStorage.getItem('game-maker.editor')`)) === null &&
+      (await evaluate(`localStorage.getItem('feuerwerk.editor')`)) === null &&
       (await undoSteps()) === stepsBefore,
     JSON.stringify({ steps: await undoSteps(), stepsBefore }),
   );
diff --git a/tools/e2e/04-assets.mjs b/tools/e2e/04-assets.mjs
index d01cbcfe..5a6a34e9 100644
--- a/tools/e2e/04-assets.mjs
+++ b/tools/e2e/04-assets.mjs
@@ -629,7 +629,7 @@ async function emptyGroupsOnSwitch(t) {
     all.filter((g) => g.category === c).every((g) => g.ids.length === 0),
   );
   const seen = {
-    stored: await json(`JSON.parse(localStorage.getItem('game-maker.general-settings') ?? 'null')`),
+    stored: await json(`JSON.parse(localStorage.getItem('feuerwerk.general-settings') ?? 'null')`),
     emptyAlpha: await json(`__gm.assetRowAlpha('group:${empty?.type}')`),
     fullAlpha: await json(`__gm.assetRowAlpha('group:${full?.type}')`),
     categoryAlpha: emptyCategory ? await json(`__gm.assetRowAlpha('category:${emptyCategory}')`) : null,
@@ -676,7 +676,7 @@ async function emptyGroupsOnSwitch(t) {
   check(
     'switched off again, only the types with assets are listed',
     shape(off) === shape(before) &&
-      (await json(`JSON.parse(localStorage.getItem('game-maker.general-settings'))`)).showEmptyAssetGroups ===
+      (await json(`JSON.parse(localStorage.getItem('feuerwerk.general-settings'))`)).showEmptyAssetGroups ===
         false,
     JSON.stringify({ before: shape(before), off: shape(off) }),
   );
diff --git a/tools/e2e/12-textures.mjs b/tools/e2e/12-textures.mjs
index b410b92b..7fb58656 100644
--- a/tools/e2e/12-textures.mjs
+++ b/tools/e2e/12-textures.mjs
@@ -398,8 +398,8 @@ export async function textures(t) {
   //      a new name renames it (the user's rule), a path is stripped to its last part, and an
   //      upload carrying no name at all leaves the known one alone rather than erasing it.
   const renamed = await evaluate(`(async () => {
-    const bytes = await fetch('/game-maker/data/textures/${spare}').then((r) => r.blob());
-    const post = (query) => fetch('/game-maker/api/index.php?r=textures' + query,
+    const bytes = await fetch('/feuerwerk/data/textures/${spare}').then((r) => r.blob());
+    const post = (query) => fetch('/feuerwerk/api/index.php?r=textures' + query,
       { method: 'POST', headers: { 'Content-Type': 'image/png' }, body: bytes }).then((r) => r.json());
     const evil = await post('&name=' + encodeURIComponent('../../evil/renamed.png'));
     const nameless = await post('');
@@ -417,7 +417,7 @@ export async function textures(t) {
     JSON.stringify(await json('__gm.state.notice')),
   );
   // Bytes that are no picture are the caller's mistake: a 422 that says so, not a server error.
-  const refusedUpload = await evaluate(`fetch('/game-maker/api/index.php?r=textures&name=x.png',
+  const refusedUpload = await evaluate(`fetch('/feuerwerk/api/index.php?r=textures&name=x.png',
     { method: 'POST', headers: { 'Content-Type': 'image/png' }, body: 'hello' })
     .then(async (r) => ({ status: r.status, error: (await r.json()).error }))`);
   check(
diff --git a/tools/e2e/30-font.mjs b/tools/e2e/30-font.mjs
index 0e248af4..d83f802c 100644
--- a/tools/e2e/30-font.mjs
+++ b/tools/e2e/30-font.mjs
@@ -62,7 +62,7 @@ export async function font(t) {
 
   // 30a. What the server holds, straight from the API: the two files the seed put there.
   // `evaluate`, not `json`: the latter stringifies the promise itself rather than what it yields.
-  const stored = await evaluate(`fetch('/game-maker/api/index.php?r=fonts').then((r) => r.json())`);
+  const stored = await evaluate(`fetch('/feuerwerk/api/index.php?r=fonts').then((r) => r.json())`);
   const serif = stored.find((item) => item.bytes === SERIF_BYTES);
   const mono = stored.find((item) => item.bytes === MONO_BYTES);
   check(
@@ -208,7 +208,7 @@ export async function font(t) {
   // 30g. Dropping a font file onto the editor uploads it and makes an asset named after the file.
   const dropped = await evaluate(`
     (async () => {
-      const bytes = await fetch('/game-maker/data/fonts/${mono.file}').then((r) => r.arrayBuffer());
+      const bytes = await fetch('/feuerwerk/data/fonts/${mono.file}').then((r) => r.arrayBuffer());
       const file = new File([bytes], 'DejaVuSansMono.ttf', { type: 'font/ttf' });
       const data = new DataTransfer();
       data.items.add(file);
diff --git a/tools/e2e/32-scope.mjs b/tools/e2e/32-scope.mjs
index 3f36e07a..57253f87 100644
--- a/tools/e2e/32-scope.mjs
+++ b/tools/e2e/32-scope.mjs
@@ -243,7 +243,7 @@ export async function scope(t) {
     g.nodes.find((n) => n.id === 'sc-read').params.variablesAsset = 'sc-vars';
   `);
   const pid = await json('__gm.state.project.id');
-  const saveKey = (area) => `game-maker.saves.${pid}.${area}`;
+  const saveKey = (area) => `feuerwerk.saves.${pid}.${area}`;
   const saved = (area) =>
     json(`JSON.parse(localStorage.getItem(${JSON.stringify(saveKey(area))}) ?? 'null')`);
   await t.evaluate(
diff --git a/tools/e2e/34-sound.mjs b/tools/e2e/34-sound.mjs
index 75f08df7..e57b5d2a 100644
--- a/tools/e2e/34-sound.mjs
+++ b/tools/e2e/34-sound.mjs
@@ -55,7 +55,7 @@ export async function sound(t) {
   await showTab('scene');
 
   // 34a. What the server holds, straight from the API: the two files the seed put there.
-  const stored = await evaluate(`fetch('/game-maker/api/index.php?r=sounds').then((r) => r.json())`);
+  const stored = await evaluate(`fetch('/feuerwerk/api/index.php?r=sounds').then((r) => r.json())`);
   const blip = stored.find((item) => item.bytes === BLIP_BYTES);
   const drone = stored.find((item) => item.bytes === DRONE_BYTES);
   check(
@@ -75,7 +75,7 @@ export async function sound(t) {
     const bytes = crypto.getRandomValues(new Uint8Array(48));
     bytes.set([...'RIFF'].map((c) => c.charCodeAt(0)), 0);
     bytes.set([...'WAVE'].map((c) => c.charCodeAt(0)), 8);
-    const r = await fetch('/game-maker/api/index.php?r=sounds&name=spare.wav', {
+    const r = await fetch('/feuerwerk/api/index.php?r=sounds&name=spare.wav', {
       method: 'POST', headers: { 'Content-Type': 'audio/wav' }, body: bytes,
     });
     return (await r.json()).file;
@@ -115,7 +115,7 @@ export async function sound(t) {
     () => json('__gm.soundPicker()'),
     (p) => !p.files.includes(spare),
   );
-  const served = await evaluate(`fetch('/game-maker/data/sounds/${spare}').then((r) => r.status)`);
+  const served = await evaluate(`fetch('/feuerwerk/data/sounds/${spare}').then((r) => r.status)`);
   check(
     'the first press asks, the second deletes the file on the server',
     armed.deleteButton.shown === 'Delete for good' &&
@@ -3327,7 +3327,7 @@ export async function sound(t) {
   // 34h. Dropping a sound file onto the editor uploads it and makes an asset named after the file.
   const dropped = await evaluate(`
     (async () => {
-      const bytes = await fetch('/game-maker/data/sounds/${drone.file}').then((r) => r.arrayBuffer());
+      const bytes = await fetch('/feuerwerk/data/sounds/${drone.file}').then((r) => r.arrayBuffer());
       const file = new File([bytes], 'drone.wav', { type: 'audio/wav' });
       const data = new DataTransfer();
       data.items.add(file);
diff --git a/tools/e2e/35-load-scene.mjs b/tools/e2e/35-load-scene.mjs
index ac2824e4..f46d672e 100644
--- a/tools/e2e/35-load-scene.mjs
+++ b/tools/e2e/35-load-scene.mjs
@@ -99,7 +99,7 @@ export async function loadScene(t) {
   const firstName = await json('__gm.state.activeScene.name');
 
   // A sound to have something playing across the swap; the seed put the files on the server.
-  const stored = await evaluate(`fetch('/game-maker/api/index.php?r=sounds').then((r) => r.json())`);
+  const stored = await evaluate(`fetch('/feuerwerk/api/index.php?r=sounds').then((r) => r.json())`);
   const file = stored[0]?.file ?? '';
 
   // 35a. A second scene with a box of its own, a Variables asset, and the behavior that counts and
diff --git a/tools/e2e/38-plugins.mjs b/tools/e2e/38-plugins.mjs
index 2a6548b8..84300955 100644
--- a/tools/e2e/38-plugins.mjs
+++ b/tools/e2e/38-plugins.mjs
@@ -215,7 +215,7 @@ export async function plugins(t) {
   // The switch is the project's (#119): it stands in the project file and travels with it. The
   // server's own list knows nothing about it any more – it only says which files there are.
   const listed = await evaluate(
-    `fetch('/game-maker/api/index.php?r=plugins').then(async (r) => JSON.stringify(await r.json()))`,
+    `fetch('/feuerwerk/api/index.php?r=plugins').then(async (r) => JSON.stringify(await r.json()))`,
   );
   const file = JSON.parse(listed).find((e) => e.file === 'demo-plugin.js');
   check(
diff --git a/tools/e2e/46-topbar.mjs b/tools/e2e/46-topbar.mjs
index 75f3f49c..615e7169 100644
--- a/tools/e2e/46-topbar.mjs
+++ b/tools/e2e/46-topbar.mjs
@@ -426,7 +426,7 @@ export async function topbar(t) {
   const kept = {
     dialog: await json('__gm.generalSettingsDialog()'),
     ms: await json('__gm.zoomTransition()'),
-    stored: await json(`JSON.parse(localStorage.getItem('game-maker.general-settings') ?? 'null')`),
+    stored: await json(`JSON.parse(localStorage.getItem('feuerwerk.general-settings') ?? 'null')`),
   };
   check(
     '"General settings…" opens on the kept transition, and Apply keeps the one typed in the browser',
@@ -463,9 +463,7 @@ export async function topbar(t) {
   const cursorOn = { css: await json('__gm.canvasCursor()'), size: await pictureLoads() };
   await switchCursor();
   const cursorOff = { css: await json('__gm.canvasCursor()') };
-  const storedOff = await json(
-    `JSON.parse(localStorage.getItem('game-maker.general-settings')).customCursor`,
-  );
+  const storedOff = await json(`JSON.parse(localStorage.getItem('feuerwerk.general-settings')).customCursor`);
   await switchCursor();
   const cursorBack = await json('__gm.canvasCursor()');
   check(
diff --git a/tools/e2e/48-pixelart.mjs b/tools/e2e/48-pixelart.mjs
index 6f4e4c2c..1a35eddd 100644
--- a/tools/e2e/48-pixelart.mjs
+++ b/tools/e2e/48-pixelart.mjs
@@ -818,7 +818,7 @@ export async function pixelArt(t) {
   const files = [...new Set(stored.frames.flatMap((f) => Object.values(f.cels)))];
   const statuses = JSON.parse(
     await evaluate(
-      `Promise.all(${JSON.stringify(files)}.map((f) => fetch('/game-maker/data/pixels/' + f).then((r) => r.status))).then((s) => JSON.stringify(s))`,
+      `Promise.all(${JSON.stringify(files)}.map((f) => fetch('/feuerwerk/data/pixels/' + f).then((r) => r.status))).then((s) => JSON.stringify(s))`,
     ),
   );
   check(
@@ -828,7 +828,7 @@ export async function pixelArt(t) {
   );
   // 48m-ii. A divider stays where it was left: its place is kept in the browser, not in the project,
   //         so the reload brings the wider panel back. Dragged back after, for the modules to come.
-  const keptSizes = () => json(`JSON.parse(localStorage.getItem('game-maker.panel-sizes') ?? '{}')`);
+  const keptSizes = () => json(`JSON.parse(localStorage.getItem('feuerwerk.panel-sizes') ?? '{}')`);
   const columnBefore = await json('__gm.leftColumn()');
   const bars = await json('__gm.panelSplitters()');
   await drag(bars.left.x, bars.left.y, bars.left.x + 40, bars.left.y, { steps: 6 });
@@ -878,7 +878,7 @@ export async function pixelArt(t) {
     folded: foldedHead.folded,
     h: foldedHead.h,
     merge: await control('layer:merge'),
-    stored: await json(`localStorage.getItem('game-maker.folded-sections')`),
+    stored: await json(`localStorage.getItem('feuerwerk.folded-sections')`),
   };
   await shot('48-list-folded');
   await click(foldedHead.x, foldedHead.y);
diff --git a/tools/e2e/60-release.mjs b/tools/e2e/60-release.mjs
index a7e74898..6154f26a 100644
--- a/tools/e2e/60-release.mjs
+++ b/tools/e2e/60-release.mjs
@@ -123,12 +123,12 @@ export async function release(t) {
     await waitUntil('__gm.release() !== null', { label: 'the release dialog opened' });
     return json('__gm.release()');
   };
-  const player = (what) => json(`__gameMakerPlay.${what}`);
+  const player = (what) => json(`__feuerwerkPlay.${what}`);
   /** The play page as somebody without an account opens it. */
   const openLink = async (link) => {
     await cdp.send('Network.clearBrowserCookies');
     await cdp.send('Page.navigate', { url: link });
-    await waitUntil('Boolean(window.__gameMakerPlay)', { timeout: 15000, label: 'the play page is up' });
+    await waitUntil('Boolean(window.__feuerwerkPlay)', { timeout: 15000, label: 'the play page is up' });
   };
 
   // The step before may leave an edit on its way to the server; leaving the page then would stop at
@@ -157,7 +157,7 @@ export async function release(t) {
       'Publish in the release dialog makes a link to the play page, for the project as saved',
       before.link === null &&
         before.state.startsWith('Not released') &&
-        after.link === `${origin}/game-maker/play.html?game=${token}` &&
+        after.link === `${origin}/feuerwerk/play.html?game=${token}` &&
         after.state.endsWith('the link plays the project as saved') &&
         after.warnings.length === 0,
       JSON.stringify({ before, after }),
@@ -202,7 +202,7 @@ export async function release(t) {
 
     // 60c. The link, without a session: the page colour, "Click to play", and nothing of the editor.
     await openLink(after.link);
-    await waitUntil('__gameMakerPlay.screen().caption === "Click to play"', {
+    await waitUntil('__feuerwerkPlay.screen().caption === "Click to play"', {
       timeout: 15000,
       label: 'the game offers to start',
     });
@@ -236,7 +236,7 @@ export async function release(t) {
       HTMLAnchorElement.prototype.click = function () { window.__downloads.push({ name: this.download, href: this.href }); };`);
     const size = { w: await json('innerWidth'), h: await json('innerHeight') };
     await click(size.w / 2, size.h / 2);
-    await waitUntil('__gameMakerPlay.running()', { label: 'the game runs' });
+    await waitUntil('__feuerwerkPlay.running()', { label: 'the game runs' });
     await sleep(300);
     const cornerAfterClick = await player('fullscreen()');
     const screen = await player('screen()');
@@ -366,12 +366,12 @@ export async function release(t) {
     const releasedZoom = (await (await send('GET', `releases/${token}`, undefined, false)).json()).project
       .gameLinkZoom;
     await openLink(after.link);
-    await waitUntil('__gameMakerPlay.screen().caption === "Click to play"', {
+    await waitUntil('__feuerwerkPlay.screen().caption === "Click to play"', {
       timeout: 15000,
       label: 'the fitted game offers to start',
     });
     await click(size.w / 2, size.h / 2);
-    await waitUntil('__gameMakerPlay.running()', { label: 'the fitted game runs' });
+    await waitUntil('__feuerwerkPlay.running()', { label: 'the fitted game runs' });
     await sleep(300);
     const fitted = await player('screen()');
     const fit = Math.min(size.w / CAMERA.width, size.h / CAMERA.height);
@@ -418,7 +418,7 @@ export async function release(t) {
     await clickLast('Cancel');
     const dead = await send('GET', `releases/${token}`, undefined, false);
     await openLink(after.link);
-    await waitUntil('__gameMakerPlay.screen().caption !== "Loading…"', { label: 'the page gave up' });
+    await waitUntil('__feuerwerkPlay.screen().caption !== "Loading…"', { label: 'the page gave up' });
     check(
       'Take down makes the link dead',
       dead.status === 404 && (await player('screen()')).caption === 'This game is not available.',
diff --git a/tools/e2e/64-pattern.mjs b/tools/e2e/64-pattern.mjs
index 30c5152c..ebfefd26 100644
--- a/tools/e2e/64-pattern.mjs
+++ b/tools/e2e/64-pattern.mjs
@@ -35,7 +35,7 @@ export async function pattern(t) {
   await press('Escape');
   await evaluate('__gm.state.select(null)');
   await showTab('scene');
-  const stored = await evaluate(`fetch('/game-maker/api/index.php?r=sounds').then((r) => r.json())`);
+  const stored = await evaluate(`fetch('/feuerwerk/api/index.php?r=sounds').then((r) => r.json())`);
   const blip = stored.find((item) => item.bytes === BLIP_BYTES);
   await mutate(`
     __gm.state.project.assets.push(
@@ -600,7 +600,7 @@ export async function pattern(t) {
   await click(unbaked.button.x, unbaked.button.y);
   const bakedNow = await waitFor(bakeInfo, (info) => info.status === 'baked', 100);
   const bake = bakedNow.bake;
-  const listed = (await evaluate(`fetch('/game-maker/api/index.php?r=sounds').then((r) => r.json())`)).find(
+  const listed = (await evaluate(`fetch('/feuerwerk/api/index.php?r=sounds').then((r) => r.json())`)).find(
     (item) => item.file === bake?.file,
   );
   check(
@@ -678,7 +678,7 @@ export async function pattern(t) {
   const removed = await bakeInfo();
   const fileGone = await waitFor(
     async () =>
-      (await evaluate(`fetch('/game-maker/api/index.php?r=sounds').then((r) => r.json())`)).some(
+      (await evaluate(`fetch('/feuerwerk/api/index.php?r=sounds').then((r) => r.json())`)).some(
         (item) => item.file === bake?.file,
       ),
     (there) => !there,
diff --git a/tools/e2e/65-song.mjs b/tools/e2e/65-song.mjs
index e2ca512e..62e8c331 100644
--- a/tools/e2e/65-song.mjs
+++ b/tools/e2e/65-song.mjs
@@ -79,7 +79,7 @@ export async function song(t) {
   await press('Escape');
   await evaluate('__gm.state.select(null)');
   await showTab('scene');
-  const stored = await evaluate(`fetch('/game-maker/api/index.php?r=sounds').then((r) => r.json())`);
+  const stored = await evaluate(`fetch('/feuerwerk/api/index.php?r=sounds').then((r) => r.json())`);
   const blip = stored.find((item) => item.bytes === BLIP_BYTES);
   await mutate(`
     __gm.state.project.assets.push(
diff --git a/tools/e2e/67-recording.mjs b/tools/e2e/67-recording.mjs
index 5cdb9d26..69e1b565 100644
--- a/tools/e2e/67-recording.mjs
+++ b/tools/e2e/67-recording.mjs
@@ -165,7 +165,7 @@ export async function recording(t) {
     const video = document.createElement('video');
     video.muted = true;
     video.onerror = () => resolve('null');
-    video.src = '/game-maker/data/videos/${file}';
+    video.src = '/feuerwerk/data/videos/${file}';
     video.play().then(() => video.requestVideoFrameCallback(() => {
       video.pause();
       const canvas = document.createElement('canvas');
@@ -297,7 +297,7 @@ export async function recording(t) {
       const video = document.createElement('video');
       video.muted = true;
       video.onerror = () => resolve('null');
-      video.src = '/game-maker/data/videos/${file}';
+      video.src = '/feuerwerk/data/videos/${file}';
       video.play().then(() => video.requestVideoFrameCallback(() => {
         video.pause();
         video.onseeked = () => setTimeout(() => {
@@ -386,7 +386,7 @@ export async function recording(t) {
   const tabHead = await firstBytes(tabDownload.href);
   check(
     "the video tab's Download saves the recording as it was recorded, not the MP4",
-    tabDownload.href === `/game-maker/data/videos/${file.replace(/\.mp4$/, '.source.mkv')}` &&
+    tabDownload.href === `/feuerwerk/data/videos/${file.replace(/\.mp4$/, '.source.mkv')}` &&
       tabDownload.name === `${take.name}.mkv` &&
       (await json('window.__downloads')).some((d) => d.name === tabDownload.name) &&
       tabHead === '1a45dfa3',
@@ -457,7 +457,7 @@ export async function recording(t) {
       pickerDownload.enabled &&
       pickerConvert.enabled &&
       pickerSaved?.name === `${sharp.name}.mkv` &&
-      pickerSaved.href === `/game-maker/data/videos/${kept.file.replace(/\.mp4$/, '.source.mkv')}` &&
+      pickerSaved.href === `/feuerwerk/data/videos/${kept.file.replace(/\.mp4$/, '.source.mkv')}` &&
       pickerHead === '1a45dfa3' &&
       converted.detail.includes('2304 × 1440') &&
       converted.extras[1].enabled === false &&
diff --git a/tools/lib/auth.mjs b/tools/lib/auth.mjs
index c1db4bc4..f428dab3 100644
--- a/tools/lib/auth.mjs
+++ b/tools/lib/auth.mjs
@@ -16,7 +16,7 @@ export const E2E_ADMIN = 'e2e-admin';
 const DATA = resolve(dirname(fileURLToPath(import.meta.url)), '../../data');
 const PASSWORD_FILE = resolve(DATA, 'e2e-password.txt');
 const ADMIN_PASSWORD_FILE = resolve(DATA, 'e2e-admin-password.txt');
-const COOKIE = 'game_maker_session';
+const COOKIE = 'feuerwerk_session';
 
 /** One session per server for the whole process; logging in per request would be pointless load. */
 const cookies = new Map();
@@ -48,7 +48,7 @@ export async function e2eAdminPassword() {
 }
 
 /**
- * Signs in as anyone and answers with a fresh `game_maker_session=…`, uncached – for a step that
+ * Signs in as anyone and answers with a fresh `feuerwerk_session=…`, uncached – for a step that
  * needs a second account beside the tools' own.
  */
 export async function logIn(baseUrl, username, password) {
@@ -68,7 +68,7 @@ export async function logIn(baseUrl, username, password) {
   return set.split(';')[0];
 }
 
-/** `game_maker_session=…` for `Cookie` headers, logging in on first use. */
+/** `feuerwerk_session=…` for `Cookie` headers, logging in on first use. */
 export async function sessionCookie(baseUrl) {
   const cached = cookies.get(baseUrl);
   if (cached) return cached;
diff --git a/tools/lib/projects.mjs b/tools/lib/projects.mjs
index b666c0e0..595b7994 100644
--- a/tools/lib/projects.mjs
+++ b/tools/lib/projects.mjs
@@ -22,7 +22,7 @@ export const PROJECTS = {
   actor: '3ccb5c67220b',
 };
 
-export const DEFAULT_BASE_URL = 'https://nockal.com/game-maker/';
+export const DEFAULT_BASE_URL = 'https://nockal.com/feuerwerk/';
 
 /**
  * Reads `[projectId] [baseUrl]` from argv, falling back to `defaultId` and to
diff --git a/tools/migrate-file-owners.php b/tools/migrate-file-owners.php
index 3a8ab720..5c092258 100644
--- a/tools/migrate-file-owners.php
+++ b/tools/migrate-file-owners.php
@@ -13,7 +13,7 @@ declare(strict_types=1);
  * A file is only taken away from where it was when every document naming it could be rewritten:
  * one named by a document without an owner (or of an account that no longer exists) stays as well.
  *
- *   docker exec -u www-data web-php-fpm php /var/www/html/game-maker/tools/migrate-file-owners.php [--dry-run] [data dir]
+ *   docker exec -u www-data web-php-fpm php /var/www/html/feuerwerk/tools/migrate-file-owners.php [--dry-run] [data dir]
  */
 
 require __DIR__ . '/../api/lib/AtomicFile.php';
diff --git a/vite.config.ts b/vite.config.ts
index 32b66e18..91f8c9c5 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -3,11 +3,12 @@ import { dirname, resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { defineConfig, type Plugin } from 'vite';
 import { publishPlugins } from './tools/lib/plugins.mjs';
+import { SITE_PATH } from './src/core/site';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
 /**
- * The workspace folder itself is what nginx serves under https://nockal.com/game-maker/.
+ * The workspace folder itself is what nginx serves under https://nockal.com/feuerwerk/.
  * The Vite source pages live in `web/`: `index.html` is the editor, `play.html` a released game
  * (#266). The build writes hashed assets into `dist/` and this plugin copies the built pages to the
  * folder root, so that the site URLs load the production bundles while `api/` and `data/` sit next
@@ -17,7 +18,7 @@ const PAGES = ['index.html', 'play.html'];
 
 function publishPages(): Plugin {
   return {
-    name: 'game-maker:publish-pages',
+    name: 'feuerwerk:publish-pages',
     apply: 'build',
     closeBundle() {
       for (const page of PAGES) copyFileSync(resolve(__dirname, 'dist', page), resolve(__dirname, page));
@@ -33,7 +34,7 @@ function publishPages(): Plugin {
  */
 function shipPlugins(): Plugin {
   return {
-    name: 'game-maker:publish-plugins',
+    name: 'feuerwerk:publish-plugins',
     apply: 'build',
     closeBundle() {
       publishPlugins(__dirname);
@@ -43,7 +44,7 @@ function shipPlugins(): Plugin {
 
 export default defineConfig({
   root: 'web',
-  base: '/game-maker/dist/',
+  base: `${SITE_PATH}dist/`,
   publicDir: false,
   plugins: [publishPages(), shipPlugins()],
   build: {
@@ -61,7 +62,7 @@ export default defineConfig({
     port: 5175,
     // During development the PHP API is served by the production nginx; proxy it.
     proxy: {
-      '/game-maker/api': {
+      [`${SITE_PATH}api`]: {
         target: 'https://nockal.com',
         changeOrigin: true,
       },
diff --git a/web/index.html b/web/index.html
index a3d7758d..7b785f29 100644
--- a/web/index.html
+++ b/web/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
-    <title>Game Maker</title>
+    <title>Feuerwerk</title>
     <style>
       html, body { margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden; background: #1b1d22; }
       canvas { display: block; width: 100%; height: 100%; touch-action: none; }