OpenGame Browser Game MCP

A small, local Model Context Protocol server for agents that help people plan focused, original browser-game prototypes.

Official website: https://opengame.app/

It exposes four deterministic tools:

• opengame_list_showcases — public 2D and 3D OpenGame references with play, prompt, and product links.
• opengame_recommend_browser_runtime — choose a practical Canvas/DOM or Three.js/WebGL starting point.
• opengame_create_game_blueprint — create a compact vertical-slice brief, controls, core loop, build order, and scope guardrails.
• opengame_validate_game_brief — check that a brief covers the loop, controls, win, loss/restart, and player feedback.

The server is deliberately local and read-only. It does not call OpenGame production systems, access user data, send telemetry, require an API key, or generate code on a user's behalf.

Install

Install the public npm package in an MCP client with:

{
  "mcpServers": {
    "opengame-browser-game": {
      "command": "npx",
      "args": ["-y", "opengame-browser-game-mcp"]
    }
  }
}

Node.js 20 or newer is required.

The server is also published as io.github.opengameapp/browser-game in the Official MCP Registry and listed on LobeHub Market.

Local development

npm install
npm test
npm run check
npm start

Use the MCP Inspector to exercise the server interactively:

npx @modelcontextprotocol/inspector node dist/index.js

Source and showcases

The public source, prompts, and browser-game references live in OpenGame Showcases.

For a hosted AI game-making workflow, see OpenGame AI Game Maker.

License

MIT