ChatGPT vs Claude: Same Game, Two Builds

I gave ChatGPT / Sol and Claude / Opus the same game design document, then played both builds. Here's what worked, what broke, and which game I'd rather keep playing. This is my hands-on playtest, not a controlled benchmark. 0:00 Same brief, two models 0:31 ChatGPT / Sol playtest 2:32 Claude / Opus playtest 6:51 The comparison and verdict 7:34 Which game would I keep playing?