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A playable DOOM MCP app

https://chrisnager.com/blog/doom-runs-in-chatgpt-and-claude/
57•chrisnager•1h ago

Comments

wingi•1w ago
simply great!
chrisnager•32m ago
Appreciate it. I had fun building.
ashrodan•1h ago
Love it! MCP apps is still new and under-utilised and we need to understand it's boundaries and compatibility.
chrisnager•1h ago
For sure.
nsxwolf•1h ago
I read this and I did not understand it. An MCP is synthesizing DOOM frames from a training set? What is this doing
nilslice•1h ago
its basically an iframe embedding doom on a remote webpage
Ethee•1h ago
It took me a reread and some thinking to realize what was going on. The 'MCP app' he's referring to here is basically a browser front-end replacement like electron. So what he's doing here is running DOOM as apart of that browser run-time and passing it through to the front-end. It's less "playing DOOM through the AI" and more "Playing DOOM while the AI can watch".
munchler•6m ago
Thank you for this explanation. So the AI can respond based on the DOOM game that it’s watching? E.g. Could you ask the chatbot for advice on what to do next on the current game level?
alach11•1h ago
Snake and DOOM were two of our early tests (for filter functions and MCP) when we stood up Open WebUI for internal chat/agent use. Sometimes games are the best way to limit-test new tech.
chrisnager•1h ago
That’s awesome. Yes!
awesome_dude•1h ago
Best capability test there is
phodo•1h ago
Great work. I wonder what the future "can it run doom ?" Will it be: Can it run AGI on a new quantum processor/ robot / bio-engineered cell. Or will it be Doom all the way down...
_pdp_•1h ago
Cool, but yes you can render whatever you want as long as you register an MCP resource and use it as part of a tool call. It is just html in an iframe.
avaer•1h ago
The title is misleading. This is in ChatGPT but not on ChatGPT. It's not running on AI. It's running on a site that serves an AI chatbot.

Still very cool though.

I suppose most people don't know this, but you can render web resources into chat harnesses via MCP apps [1]. The actual DOOM part of this runs on [2].

[1] https://modelcontextprotocol.io/extensions/apps/overview [2] https://github.com/cloudflare/doom-wasm

dang•59m ago
Ok, we've switched the title above to a hopefully-clearer phrase from the article's first sentence.
chrisnager•38m ago
Works for me! Thanks for updating.

Title changed from “DOOM runs in ChatGPT and Claude” to “A playable DOOM MCP app”.

sdkks•57m ago
I was not too surprised to see DOOM running on a pregnancy test before but seeing it on an MCP was really unexpected ;)
2ndorderthought•47m ago
It's still fun but it feels gross. Like here is this monstrosity of compute running the thing we are running in toothbrushes.
kang•29m ago
somebody did this a month ago https://www.youtube.com/watch?v=fdbXNWkpPMY

i am increasingly going schizo, where every single thing I post/see posted gets copied and karma farmed on social media. further, any novelty I share with an llm gets eaten/absorbed by the harness as a feature.

neosat•26m ago
Apart from a cool project, this evolved my perspective on what an MCP is, along with some cool architecture insights and inspiring ideas. Thank you!
chrisnager•11m ago
Glad to hear it! This stuff is fascinating and rapidly evolving. I’ve been learning by doing. Happy hacking.
throwawayk7h•25m ago
Was a little disappointed that this didn't result in the agent playing Doom itself over MCP.

Still this is very cool! (And if that had been what you'd implemented, my disappointment would have been that it wasn't the reverse. :P Can it do both?)

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A playable DOOM MCP app

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