ChatGPT vs Claude Make Tetris From Scratch

I had five AI models build Tetris from one simple prompt, then played every game myself. Six builds, one run each, with nothing fixed afterwards. Opus built it twice. The ranking at the end is my personal opinion. Play them yourself, free in your browser: ION STACK (GPT-6 Astra): https://devarf.dev/play/ion-stack/ Chromatic Tetris (GPT-5.6 Sol), listed as Chromatic Blocks: https://devarf.dev/play/chromatic-blocks/ Vector Stack (GPT-6 Sol): https://devarf.dev/play/vector-stack/ ТЕТРИС-84 (Claude Fable 5), listed as Blocks-84: https://devarf.dev/play/blocks-84/ Prismfall (Claude Opus 5): https://devarf.dev/play/prismfall/ Quartzfall (Claude Opus 5): https://devarf.dev/play/quartzfall/ On my site, the word "Tetris" is taken out of the game names and labels, so a few words look different. The games play the same. More games built with AI: https://devarf.dev or visit my site Chapters: 0:00 Five models, one Tetris prompt 0:26 Astra: ION STACK 1:27 GPT-5.6 Sol: Chromatic Tetris 2:21 GPT-6 Sol: Vector Stack 3:07 The Codex numbers 3:46 Fable: ТЕТРИС-84 4:44 Opus: Prismfall 6:10 Opus again: Quartzfall 7:16 The Claude Code numbers 7:53 My ranking How the games were made: Same user brief, default product settings, max effort, no custom skills, no added tools, no retries. Each model built its game in its own desktop app, Codex or Claude Code.