DOOM Runs as a Playable MCP App Inside ChatGPT and Claude — 85 Points on HN

Chris Nager / Hacker News·low signal

Chris Nager demonstrated a fully playable DOOM running inline inside ChatGPT and Claude via Anthropic's Model Context Protocol, using cloudflare/doom-wasm for the browser runtime. The DOOM canvas renders directly in the host iframe. This is one of the first public demonstrations of MCP apps — interactive UI applications inside MCP hosts — pushed beyond typical utility use cases into real-time gaming. 85 points, 31 comments.