Gauntlet Loop: The Prompting Method Behind Claude's 55k-Line Call of Duty Build
majidmanzarpour · x · 2026-10-12
A developer used Matt Shumer's Gauntlet Loop method to have Opus 5.5 build a Tesla Roadster entirely in code from reference images, rendered in three.js with human feedback rounds. The method: set a bar the agent can't talk its way around, split work across subagents, and never let the builder grade itself — the approach behind Shumer's viral 55k-line Call of Duty-style game built from one prompt.
Related event: Claude Opus 5.5 Recreates Tesla Roadster in Pure Code(4 posts)→
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