One Prompt Gets Opus 5.5 to Build a Playable Civilization-Style HTML Game

BenBlaiszik · x · 2026-09-23

The author prompted Claude Opus 5.5 with a single prompt to generate a self-contained HTML game. The result is genuinely playable: it includes a real tech tree, units with distinct capabilities, AI players, diplomacy, a story arc, and things to discover on the map. The author notes there's still room to grow on this task and shared the game link, inviting others to post improved versions.

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