Replays

To replay a stage is to spectate a playthrough of it via playback.

Replays are saved offline in a separate menu tab, and uploaded online to leaderboards of public stages.

There are multiple additional tools that come with replays. Comments can be posted on replays and seen by other players. The replay can also be slowed or fast-forwarded, independent of in-game timescale. It is also possible to hijack a replay for practice from a certain point, though the resulting session will not not saved.

A replay can be corrupted and abruptly end at a certain frame. This can be because the replay is for a different version of the stage and the original version was not preserved via version variable, because the run was illegitimate, or because of a glitch.