A playable DOOM MCP app • Hacker News Board

Re: A playable DOOM MCP app

#11

Post by Ethee » Tue, Apr 28, 2026, 7:41 PM UTC

nsxwolf wrote: post #4

I read this and I did not understand it. An MCP is synthesizing DOOM frames from a training set? What is this doing

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".

Re: A playable DOOM MCP app

#12

Post by chrisnager » Tue, Apr 28, 2026, 7:42 PM UTC

ashrodan wrote: post #3

Love it! MCP apps is still new and under-utilised and we need to understand it's boundaries and compatibility.

For sure.

Re: A playable DOOM MCP app

#13

Post by huflungdung » Tue, Apr 28, 2026, 7:43 PM UTC

[dead]

Re: A playable DOOM MCP app

#14

Post by avaer » Tue, Apr 28, 2026, 7:45 PM UTC

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

Re: A playable DOOM MCP app

#15

Post by dang » Tue, Apr 28, 2026, 7:53 PM UTC

avaer wrote: post #14

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

Ok, we've switched the title above to a hopefully-clearer phrase from the article's first sentence.

Re: A playable DOOM MCP app

#16

Post by _oxxa » Tue, Apr 28, 2026, 7:56 PM UTC

I was not too surprised to see DOOM running on a pregnancy test before but seeing it on an MCP was really unexpected ;)

Re: A playable DOOM MCP app

#17

Post by 2ndorderthought » Tue, Apr 28, 2026, 8:06 PM UTC

_oxxa wrote: post #16

I was not too surprised to see DOOM running on a pregnancy test before but seeing it on an MCP was really unexpected ;)

It's still fun but it feels gross. Like here is this monstrosity of compute running the thing we are running in toothbrushes.

Re: A playable DOOM MCP app

#18

Post by chrisnager » Tue, Apr 28, 2026, 8:15 PM UTC

dang wrote: post #15

avaer wrote: post #14

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

Ok, we've switched the title above to a hopefully-clearer phrase from the article's first sentence.

Works for me! Thanks for updating.

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

Re: A playable DOOM MCP app

#19

Post by chrisnager » Tue, Apr 28, 2026, 8:21 PM UTC

wingi wrote: post #2

simply great!

Appreciate it. I had fun building.

Re: A playable DOOM MCP app

#20

Post by kang » Tue, Apr 28, 2026, 8:23 PM UTC

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.