Opus 5.5 builds an endless procedural flight simulator from one prompt

CyrilXBT @cyrilXBTOriginally posted 2026.09.26

Open original on X

i asked opus 5.5 for a flight simulator over procedural mountains in one html file 321 lines. one prompt. one bug fixed by hand. nothing here was modeled. every peak, lake and tree is generated as you fly, so the world never ends bank left and dive toward the snow line. the mountains keep building in front of you follow @cyrilXBT

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