Claude Code ran 12 hours on one prompt and shipped a playable pixel-art RPG
EdgarDruin · reddit · 2026-10-12
A developer gave Claude Code a single prompt — build a 3D pixel-art game in Three.js, orchestrate sub-agents, take as long as needed — and it ran autonomously for about 12 hours, producing a playable HD-2D RPG with a village, forest, dungeon, four-character party and turn-based battles. The game has zero image, model or audio assets: every texture, sprite, song and sound effect is generated in code at load time, and the whole first chapter is a 4 MB browser download. Post-hoc prompts polished it, and anonymous logging helped fix shader bugs on machines the author doesn't own.
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