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Make a multiplayer game with Claude

Connect Claude to Rally Studio once. Then describe a game: Claude builds it on Rally’s multiplayer engine, playtests it with bots, publishes it when you say so, and your friends play it from a link.

Connect Claude

Rally Studio’s address

https://rally.place/api/mcp
  1. In Claude (claude.ai or the desktop app), open Customize › Connectors and choose + Add › Add custom connector.
  2. Name it “Rally Studio”, paste Rally Studio’s address (above) as the URL, then choose Continue and Add.
  3. Sign in to Rally (it’s free), check what Claude may do, and choose Allow.
  4. In a chat, turn Rally Studio on under + › Connectors, and describe your game.

Stuck? The docs walk through it with pictures.

Then say what to make

Be specific about players, the goal and the feel. When you like it, say “publish it” and share the link Claude gives you.

Make a 3D lava-rise obby on Rally for up to 8 players: the lava climbs every 10 seconds, checkpoints every few platforms, and the last one standing wins.

Or start from a ready-made template.

The whole guide Docs

Games people are playing

Questions

Does it work with Claude’s free plan?
Claude decides which plans can add custom connectors. If you don’t see Add custom connector, your plan or your organization’s settings don’t allow it yet.
Does it work in Claude Code?
Yes: add Rally Studio as a remote MCP server with its address. The docs have the exact command.
Can Claude see my other games or my messages?
No. Claude only works on the games you own or collaborate on, with the permissions you allowed, and never sees your messages on Rally.
Is it free?
Yes. Making, publishing and playing games on Rally is free; your AI app runs on the plan you already have with it.
Do my friends need an account to play?
No. Anyone can play a published game from its link, right in the browser.