Why This Matters
This development demonstrates the innovative integration of classic gaming within modern AI platforms, enabling users to experience DOOM directly inside ChatGPT and Claude. It highlights the potential for interactive, embedded applications in AI environments, enhancing user engagement and showcasing cross-platform compatibility. This approach paves the way for more immersive and versatile AI-powered entertainment and tools in the tech industry.
Key Takeaways
- Enables inline DOOM gameplay within AI chat platforms like ChatGPT and Claude.
- Uses MCP apps to create interactive, cross-platform gaming experiences.
- Leverages WebAssembly and signed tokens for seamless, secure integration across different hosts.
DOOM runs in ChatGPT and Claude
Apr 17, 2026
I made a playable DOOM MCP app that can launch inline inside compatible AI clients like ChatGPT and Claude, and falls back to a browser URL everywhere else.
DOOM running on Claude web
MCP apps are "interactive UI applications that render inside MCP hosts like Claude Desktop."
The final version is intentionally lean:
one MCP tool to create a DOOM session inline
one MCP tool to return a plain launch URL
one browser route at /doom/play
one signed-token flow that works in both places
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