One prompt, 40 minutes: dev recreates No Man's Sky with Claude Opus 5.5 and Three.js
Jonesiller5383 · reddit · 2026-09-28
A Reddit user built a browser-playable No Man's Sky-style game called Sky Reach with a single prompt using Claude Opus 5.5 and Three.js on the Tesana platform — generated in just 40 minutes.
- Headline feature: zero loading screens — take off from a planet, climb through the atmosphere into space, and land on the next planet in one continuous flight.
- Surprising scope for generated code: procedurally generated star systems with warp travel, per-planet terrain/weather/flora/fauna (some hostile), decodable alien ruins, mining, asteroid fields, and a space station.
- The author is answering questions about how it was made; the game is playable at tesana.com/game/sky-reach.
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