Claude Opus 5.5 one-shots a playable British forest city-builder game

isnit0 · x · 2026-10-06

Developer isnit0 showcased a complete British forest city-building game, Greenfield Alpha, generated in a single one-shot prompt by Opus 5.5, with a live playable link and an open invitation for feedback. The demo highlights how far top coding models have come at producing full playable game prototypes without manual fixes.

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