is a free-to-play rhythm game renowned for its precision-based gameplay and competitive community. A core component of the game’s ecosystem is the Replay Viewer – a built-in tool that records, stores, and plays back every user’s performance. Unlike simple video recordings, the osu! replay system is data-driven , capturing raw input sequences. This paper provides a technical and functional overview of the Replay Viewer, examining how it works, what data it contains, and how players, coaches, and developers use it.
(and similar community tools) have bridged this gap. osu replay viewer