Updraft: 21 worlds, 21 boss fights

From the post

Fable 5.5 is pretty great, did this in a few hours on the chat version on high with minimal prompts 21 worlds, 3D versions, 21 bosses with different mechanics, leaderboard Try it out! Video made by Claude too ofc

— @EMostaque

Author’s claim. Posted before Fable 5.2 came out. The author called it Fable 5.5, the name rumors gave the next Fable. We can’t verify which model ran.