From a Tweet to a Playable 3D Game: What Claude Fable 5 Built in One Session
Reading Time: 4 minutesSimon Willison used a single prompt and two old images to have Claude Fable 5 autonomously build a complete 3D browser game — Raccoon Heist — with animated characters, sound, mobile touch controls, and automated testing across seven commits. The experiment demonstrates what autonomous AI-assisted development looks like today, and what it could mean for non-technical professionals who need interactive digital tools without a development team.