Developer builds playable space exploration game with 80+ planets in single Claude Opus 5.5 prompt

A developer has created a fully playable space exploration game featuring more than 80 visitable planets using only a single prompt to Claude Opus 5.5, Anthropic's latest flagship model released on September 22, 2026. The game, built with Three.js and styled after the procedural exploration of No Man's Sky, allows players to fly between star systems, land on individual planets, and explore on foot—all generated through code by the AI model without manual game engine setup.