Make it a lot more fun," he told Claude. And the game was fun Programmer Simon Willison says October was a turning point: Cloud Opus 5.5 is now building games that are fun to play. Older models made things that only looked like games. In a few weeks he coded four browser games without reading the code. No one took more than four hours of his time. Tree Evaluator, a game to spot the difference with two generated trees, came from one message in Claude's regular chat.

Make it a lot more fun," he told Claude. And the game was fun Programmer Simon Willison says October was a turning point: Cloud Opus 5.5 is now building games that are fun to play. Older models made things that only looked like games. In a few weeks he coded four browser games without reading the code. No one took more than four hours of his time. Tree Evaluator, a game to spot the difference with two generated trees, came from one message in Claude's regular chat.

Amberwick, a fantasy RPG with a 15 minute story. Its ending left him "emotionally affected".

Battle Drones, a command-and-conquer style strategy game, now with 2-4 player multiplayer His starting message works on both ChatGPT and Cloud: Build a mobile-optimized 3.js game where if the result is boring, add to make it much more fun GPT-6 Astra can also build games, he says, but “its sense of fun doesn't match that of Opus 5.5. ".