(Lean)DOOM: DOOM fully rewritten in the Lean proof assistant, with formal proofs included
akbirthko · x · 2026-10-04
Developer @145k4 released (Lean)DOOM, a port of DOOM written entirely in the Lean programming language / proof assistant. Curious about math proofs and formalization, they discovered Lean supports general-purpose programming and built the whole game in it — including a couple of genuine formal proofs "where they make sense." An amusing showcase of Lean's capabilities beyond theorem proving.
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