# Simon Willison says vibe-coded games have reached a fun-quality inflection point

> Original title: The October inflection point for vibe game development

- Source: Simon Willison
- Published: 2026-10-28T13:55:15.000Z
- Bad Influence: https://badinfluence.news/items/y08a96jgn5bb1idzc5x2j60jb
- Original: https://simonwillison.net/2026/Oct/28/vibe-game-development/

## Summary

Simon Willison says Claude Opus 5.5 can now build browser games that are genuinely fun to play, citing four games he built mostly through prompting. He says GPT-6 Astra cannot yet match Opus 5.5's sense of fun, and that the new bottleneck is coming up with novel game concepts.