New recording and replay feature added to Box2D. Uses determinism to exactly reproduce the simulation for your game. Debug your game with all details including ray casts and other queries. Deterministic rollback too. box2d.org/posts/2026/0...

ReplayReplay is a new system I developed for Box2D. The main goal is to allow users to send me files I can use to reproduce bugs. Because Box2D is open source, I can rarely run a user’s game or see their co...box2d.org