Opus 5 Game Prompt Goes Viral: Recreate a 3A Masterpiece in 24 Hours

A prompt for the Opus 5 model, named 'Challenge Loop', has gone viral, allowing users to create games with visuals rivaling 3A titles in 24 hours. The logic involves a main agent that decomposes tasks, sub-agents that execute, and a separate judge agent that compares the output against real 3A games (e.g., Call of Duty, Starfield) using blind side-by-side comparison; if the result is inferior, it is sent back for rework. The prompt was created by Matt Shumer, who used it to produce a Call of Duty clone with all textures, animations, and sounds AI-generated, using no external assets. Another user, Anshu, created a space exploration game 'The Long Silence' in 24 hours using Three.js, with assets generated via Blender MCP and Claude Code. The judge agent enforced 17 mandatory verification steps. The trend has spread widely, with users creating kart racing games and even 'Claudepunk 2077' using the same prompt. The method highlights Opus 5's ability to handle long, multi-step tasks and self-correct. Matt Shumer, an AI entrepreneur and investor, previously wrote a viral article claiming public perception of AI capabilities lags behind actual progress.