Opus 5 Runs for 12 Hours to Build a Fully Playable Multiplayer FPS Game
FinanceYF5 · x · 2026-08-02
A developer used the Claude Opus model continuously for 12 hours to autonomously build a Halo 1 clone from scratch.
The game now supports 5v5 Team Deathmatch on a self-hosted server, with matchmaking, leaderboards, and in-game text chat all functioning flawlessly. This demonstrates that AI coding agents are capable of developing complete, complex systems including backend multiplayer logic, moving well beyond simple demo creation.
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