Jun 14, 2026
I had Claude Fable 5 build Minecraft from scratch
Here’s something that’ll blow your mind — an AI built a complete Minecraft clone entirely from scratch, without relying on any existing game engine. According to /u/unfortuantelyshelove, Claude Fable 5 was directed to create Pebble, a macOS block game, using only Apple frameworks and handwritten Metal rendering. It’s not just a simple demo; it’s a full game with 879 blocks, 1,188 items, and even real-time synthesized sounds, all built from zero. The game runs smoothly at 200+ fps on a MacBook Air, and the code is open source, so anyone can dig in. What’s wild is that Claude managed to recreate vanilla-like physics and world generation, all test-verified with 456 regression tests — meaning it’s highly deterministic and reproducible, even if it’s not Minecraft’s seed. So, what does this tell us? AI’s not just generating text anymore — it’s building entire software stacks, game worlds, and experiences, all on its own. If this pattern holds, the next frontier isn’t just smarter AI, but AI that’s fully autonomous in creation.