A browser horror game built with Three.js.

You wake up in an endless maze of yellow rooms. Explore, manage your sanity, and find a telephone before the game fades out around you.

• Node.js 22+
• npm 11+

npm install
npm run dev

npm run dev
npm run lint
npm run lint:fix
npm run build
npm run preview

• Move with W, A, S, D
• Look with the mouse
• Answer a phone with E
• On mobile, use the virtual joystick and tap the phone directly

The objective is simple: reach a phone before sanity reaches zero.

• Infinite chunk-based Backrooms maze
• Sanity system with escalating visual and audio effects
• Procedural world generation with deterministic chunk layout
• Web Audio ambient soundscape
• Mobile touch controls
• Low-sanity bacteria encounters
• Shader-based wake-up and fade transitions
• Quality presets (?quality=desktop|mobile|low) and a profiling overlay (?profile)

• src/main.js: menu entry; lazy-loads the runtime when a level starts
• src/runtime.js: game runtime and frame loop
• src/world.js: chunk generation, cached world data, wall spatial index, line of sight
• src/audio.js: sound playback and distortion pipeline
• src/input.js: desktop and mobile input
• src/hud.js: sanity bar and interaction prompts
• src/entity.js: bacteria logic
• src/models.js: materials, geometry, and GLTF loading
• src/menu.js: level-selection menu
• src/levels.js: level definitions
• src/random.js: shared runtime randomness
• src/shaders/: shader definitions

The project uses a strict ESLint setup with:

• @eslint/js
• eslint-plugin-import
• eslint-plugin-sonarjs
• eslint-plugin-unicorn

It also includes local checks for Three.js hot paths. Render and update functions should reuse temporary math objects instead of allocating THREE.Vector2, THREE.Vector3, THREE.Box3, or large typed arrays during gameplay.

Run:

npm run lint

and keep it clean.

npm run build

The build is code-split: the menu loads first and the game runtime (including Three.js) loads when a level starts. Vite still warns about the size of the Three.js vendor chunk; that is expected.