ChatGPT coded a playable FPS in 39KB after an hour, well under the 100KB limit

Algoartist · reddit · 2026-10-13

A Reddit user challenged ChatGPT to build an FPS game under 100KB. An hour later it delivered "ION VAULT", a playable 39KB retro-style shooter with a full neon level, armor/energy HUD, as shown in the screenshot. Verdict: "not great but playable."

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