Opus 5 reportedly one-shots a playable FPS zombies game in a $400 prompt test

mattshumer_ · x · 2026-07-26

Opus 5 was used to one-shot a real FPS zombies-style game from a viral prompt, according to a reposted test. The author says the attempt cost nearly $400 in tokens and took about 3 hours, and claims it went much further than similar tries with Fable and Kimi K3.

The post is essentially a hands-on comparison showing one model successfully produced a playable game in a single shot, making it notable both for the result and for the very high token cost of the experiment.

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