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Claude Opus 5 across nine game-building tests
Opus 5 delivered the strongest detail in several rounds. It also made the efficiency argument against itself.
Inside the test
Same target. Frozen prompt. Honest result.
Across this suite, Opus 5 often spent more time and API-equivalent value to reach stronger visual detail. Shrine Exploration shows the upside of a seven-hour long-horizon run—and the animation, character and collision debt that current models still leave behind.
- The games
- Nine remakes from one prompt each
- The evidence
- Cost · time · tokens · artifacts
- Shrine Exploration
- Free prompt · play the result
- Builder reproduction
- Unity source · available now
Previous test: I Gave Qwen3.8 Max, Kimi K3, GPT-5.6 and Fable 5 the Same 9 Game Tests — nine frozen tests