Finally I got access to @typesafeai (thank you guys!) Jev +
Cleared Super Mario Bros 1-1 for $0.04 by parsing RAM into structured state and letting Jev choose among simulated controller macros.
The original post
Finally I got access to @typesafeai (thank you guys!)
Jev + emulator lookahead cleared Super Mario Bros. 1-1 only 0.04$.
In this setup, Jev sees no pixels: I parsed RAM into structured state, simulated controller macros, filtered predicted deaths, and let Jev choose. Recorded the run; resumed from the same state after an API outage.
The tradeoff: RAM gives precise, auditable observations, but my adapter is game-specific. Bypassing vision makes this experiment easier; it doesn’t solve perception for general game agents.
The potential is Jev as a tactical decision layer over structured observations and predicted outcomes.
Caveat: 1-1 is easy for RAM + search. Next: Jev vs a cheap heuristic on identical simulations. Does the model actually earn its place?
Engagement when collected
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 games & playable demos, agents & workflows, coding & developer tools, classification & data extraction. 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 games & playable demos page.
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Last updated: 2026-09-22 · sources & corrections · every card links to its author's original post