Opus 5.5 builds a 3D kids' math game and trailer in 24 hours

Mr V @MrV_777Originally posted 2026.09.29

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For the last 6-12 months I've been using AI to build a math game my kids would actually play. Every model update I tried again. Every result: bored in 5 minutes, AI-slop art, or too buggy for a kid. @claudeai's Opus 5.5, 24 hours: a 3D game where every attack is a math problem, 70 K–6 skills that adapt to each kid, and co-op for up to 4. It also played its own game frame by frame to make this trailer. First version my kids ask to play again.