gameplay-recording-replay

Overview

A deterministic replay artefact is a recorded session of player input or replicated state that can be played back to recreate the original game state. Three reasons games invest in replays:

1. Regression tests. Record a scripted playthrough; replay it in CI; assert the final state matches the original. Catches physics drift, AI determinism breaks, save-format regressions.
2. Bug repros. Players record a session; QA replays it inside the build with the bug; cert teams attach the replay to the ticket.
3. Esports / spectator / clip sharing. Match replays surfaced in-product.