Software engineer Chris Nager has figured out how to run Doom inside AI chatbots. Using Model Context Protocol (MCP), he built a playable version of the classic shooter that launches directly within ChatGPT and Claude. Users simply type "play Doom" to start the game inline within the chatbot interface.

The project required treating the MCP app as an actual browser rather than just a display mechanism—his first attempt looked messy until he made that adjustment. When inline launching isn't supported in a particular client, the app provides a URL link to play instead. Both the Claude and ChatGPT iOS apps can partially run the Doom app.

Fans have spent decades porting Doom to increasingly absurd surfaces: calculators, fridges, toasters, even gut bacteria. Adding AI chatbots to that list demonstrates just how versatile the 1993 game remains. Nager shared the technical details on his website and published the source code on GitHub.