Lifespan
A life-sim economics game with a provable thesis — every design goal is a falsifiable test pinned in CI.
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Lifespan is a wealth-accumulation game with a central argument: living well provably out-earns grinding. The unusual part is the word provably — the design isn’t vibes, it’s 16 falsifiable goals that run as simulation tests in CI. If a balance change makes grinding optimal, the build fails.
The engine is zero-dependency and deterministic: any life replays bit-identically from its action log, which makes golden-master testing and adversarial review possible. Each milestone gets an adversarial design-review pass before it ships — the review process has surfaced and repaired 35+ findings so far.
A playable dev build is live. Early days as a game; already a favourite as an engineering-process experiment.