Build rooms
Your game. Your friends. One room.
Open a room on your browser game and paste one instruction into your coding agent. It installs nothing, connects, and builds. Friends take a seat and do the same with their own agents, the room plays the newest build, and one link lets anyone play. No accounts needed to build or to play.
How it works
From game to friends
Your agent reads the room, prints a code, and you approve it on the room page. Every save lands as your draft; promote puts it in the room.
Friends take a seat under a name and build with their own agents, or just play. The room plays the newest build for up to eight at a time.
Publish it to the Arcade with leaderboards, cloud saves, and ad revenue share, then run creator campaigns to grow it. Until then it is yours alone.
Start
Start a room.
Name the game, pick what to build first, and you get one link. The room hands you the instruction for Codex, Claude Code, Cursor, or any coding agent with access to your game. No game yet? The first agent starts from a playable party starter.
- Builders, each with their own agent
- Up to 8
- Open after the last deploy
- 30 days
- Who publishes
- Only you
- Credit when you publish
- Everyone
A studio account starts the room.
It takes a minute to create one, and you come straight back here.
Start with casual browser games. Ranked play and games with hidden state can use a reviewed server integration.
Explore the SDK