Rolls

Rolls are like hold notes, but instead of holding down, you have to keep tapping on the note until the end of the roll. They appear as spiky holds in ITG, blue down arrow holds in SM 3.95, and green holds with spikes inside in SM5. In older versions of SM4, rolls could increment your combo when hit; this was disabled by default in SM5 but can be re-enabled in the options in this version.

They are not supported in SM 3.9 and if you try to play a chart with rolls on there, the rolls will appear as "ghost" arrows at where the end of the roll would be, and you have to hit them, otherwise SM will crash. If you hit these arrows, they will not affect your score or lifebar.

In SM 3.95, there is a bug with rolls that if you have autoplay on, the rolls can explode like mines and decrease the lifebar as they are played, causing autoplay to fail on charts with too many rolls (such as Vertex^3 from ITG 3).