Show HN: I built a 3D web-based multiplayer game with Claude Code
tombuildsstuff Thursday, January 15, 2026Hey HN!
I’ve shown this to a few people and thought folks here may be interested too.
I’ve been using Claude for a while now, and wanted to see how far I could really push it without writing a single line of code.
I ended up building a 3D web-based multiplayer game, inspired by FutureCop: LAPD (on the PS1, specifically the Precinct Assault multiplayer mode - https://www.youtube.com/watch?v=qDEXfN2ifXY), which Claude suggested would take 2-3 weeks to build (by hand).
Fast forward ~1.5 hours of prompting and I had a fun MVP - and within ~6h I was sharing it with friends. ~12 hours of prompting later - without writing a single line of code - I’m blown away at the result.
There's now multiple levels, multiple units, sounds, a leaderboard and you can use your BlueSky/GitHub username - all in 3D, all in a browser.
You can try the game out here: https://arena.ibuildstuff.eu
The code: https://github.com/tombuildsstuff/web-arena-game
Tech Stack: Three.JS and WebSockets on the frontend and Golang on the backend
I’d love to hear what you think :)