THE BACKROOMS

you noclipped out of reality

Play now: backrooms.4oli.com — a first-person survival-horror game that runs in the browser with no account or download.

What is here

The game is a client-side Three.js/WebGL application written in TypeScript. A seeded, chunk-streamed world provides six levels — LEVEL 0, LEVEL 1, LEVEL 37, LEVEL 7, LEVEL 2, and LEVEL ! — each with its own way down. The final level replaces the descent with an escape portal and fuse objective.

The systems that define a run are:

• thirst, oxygen, health, torch charge, water, scavenged items, inventory, and melee/ranged combat;
• stalking entities with distinct behaviours;
• deterministic generation from ?seed=..., with checkpoints and records in localStorage;
• desktop mouse/keyboard controls and on-screen touch controls. Use ?touch=1 or ?touch=0 to force touch mode on or off.

World geometry and textures are generated in code. Audio combines WebAudio synthesis with recorded ambience, footsteps, impacts, and other clips; see the audio credits.

Development

pnpm install
pnpm dev          # Vite development server at http://localhost:5173
pnpm check        # TypeScript check
pnpm build        # TypeScript check plus static Vite build in dist/
pnpm preview      # build, then serve the Workers asset locally
pnpm deploy       # build and deploy with Wrangler

The development environment enables VITE_HACKS=dev, which exposes the window.__game handle and shortcuts used by the headless checks. Production builds omit those hacks.

Browser checks

The Puppeteer scripts expect a running game, a Puppeteer-compatible Chrome, and normally use port 5199:

pnpm dev --port 5199
node scripts/smoke.mjs 'http://localhost:5199/?seed=1234'
node scripts/mobile.mjs 'http://localhost:5199/?seed=1234&touch=1'
node scripts/save.mjs 'http://localhost:5199/?seed=1234'

Other focused probes and tours are in scripts/.

Controls

Input	Action
WASD + mouse	Move and look
Shift	Sprint
Space / C	Jump or swim up / crouch or swim down
E	Interact, pick up, or use the current objective
LMB / RMB	Attack / block, aim, or drink depending on the item
Tab / I	Inventory
F / R / G	Torch / receiver / drop
Esc	Pause and save a checkpoint