i got jev + an llm playing doom, with a twist: try several

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Had Jev pick moves in a Doom-playing loop that runs parallel futures in microsandbox and keeps the best outcome, with an LLM reviewing results.

The original post

i got jev + an llm playing doom, with a twist: try several futures, then keep playing from the best outcome. jev picks the moves. a custom harness uses @microsandbox to run attempts in parallel from the same checkpoint. the llm reviews what happened and guides what to try next.

Engagement when collected

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Numbers are a snapshot taken from X when the case was added to the library (schema v1, collected 2026-09-19); they will not match today.

Where this case fits

Filed under coding & developer tools, games & playable demos. In the pattern Jev is built for, the model answers a bounded question per step — and ordinary code acts on the answer, because the answer is already a value rather than a paragraph. Other posts in the same family are on the coding & developer tools page.

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Last updated: 2026-09-22 · sources & corrections · every card links to its author's original post