Rally Studio

Let coding agents play, test and tune your 2D web game. The debuff MCP server attaches to the game you have open (or runs a headless copy) and gives agents live state, explained and source-mapped errors, frame timings, typed params, deterministic replays and rewind, scenario tests and fuzz playtesting. Everything an agent does shows in your dev panel, where you can undo it.

Enables AI agents to deploy multiplayer web games as playable URLs with rooms, live state sync, and leaderboards, all through a single tool call.

Turn the AI you already use into a game studio. Describe a game and Claude or Cursor builds it as a real 3D browser game: playable immediately, hosted on its own link, shareable with anyone. No engine, no build step, no code knowledge, nothing to export. Your AI ships the whole thing: it pulls free 3D assets, rigs characters, and playtests its own build until the game works. Free to start.

Enables AI assistants to publish and manage HTML5 browser games, giving each game its own address and catalogue page with leaderboards, cloud saves, player clips, daily stats, versioning, and rollback.