Developer Builds a 'GTA 6' Demo with GPT 6 in 90 Hours

ChrisGPT · x · 2026-09-09

Developer Chris GPT shared a fun demo: he used GPT 6 to build a 'GTA 6'-style game in roughly 90 hours, posting playable footage.

While far from the real thing, the long-running vibe coding project is a striking showcase of how far frontier models can carry large codebases through sustained iteration.

Related event: GPT beats GTA 6 to release as AI memes flood the timeline(5 posts)→

Original post →

More from Fun

Fun channel →