What the engine is
A real-time 3D engine with an entity system, materials, shaders, physics and multiplayer. A world is Luau code and data, so everything an agent writes is text you can read, diff and edit yourself.
Zero is an AI game engine built for AI agents
Zero runs 3D worlds in a browser tab and on the desktop. You script it in Luau, and an agent can drive the whole engine over the Model Context Protocol: scenes, entities, materials, shaders and gameplay code.
Build a world in Zero
Creating in your browser is free, and Zero is free to download for Windows, macOS and Linux.
How an agent builds in it
Zero exposes its editing surface over the Model Context Protocol, hosted and in the browser. Point Claude Code, OpenAI Codex, Cursor, Gemini CLI or your own agent at it and the agent works the engine directly.
Where the worlds go
ZeroMind keeps what you publish: commits, branches, tags and packages any other world can install. A published world gets a page and a player anyone can open in a browser.
Worlds running on Zero right now
Each of these is the engine doing its job in a browser tab, with nothing to install. Open one and play it, or fork it and read how it was built.
Grand Theft Auto VI — PS1 Demake
Updated 8d ago
Vice City, devolved. Lucia and Jason, open-world crime, police chases and a recreated reveal trailer through a PlayStation-era lens.
Sado: The Way of Tea
Updated 2mo ago
A quiet first-person tea ceremony. Perform the eight steps of usucha temae — purify, wipe, rinse, scoop, pour, whisk, present, serve — graded on Harmony, Respect, Purity and Tranquility. Four seasons, procedural audio, a rank to earn.
ZeroJS
Updated 1mo ago
ZeroJS: a JavaScript interpreter for the Zero engine
Nürburgring Drive
Updated 2mo ago
Drive the full 20.7 km Nürburgring Nordschleife. Faithful port of esc5221's drive-game: 240 Hz vehicle physics, lap + sector timing, forest-lined guardrailed track, minimap, and a cockpit view with a working rear-view mirror.
DOOM.wad
Updated 2mo ago
Multiplayer version of the first chapter in Id softwares game DOOM
AFTERCURRENT
Updated 10d ago
Electric night racing. Drift to charge a shared battery, spend it on boost or focused headlights, and drain your rivals' light across five rain-soaked circuits.