Top Descriptors collab A map with two or more associated mappers. , progression Contains a gradual advancement in difficulty or concept across the map. , slidershapes Uses a large variety of slider designs. , megacollab A map with 8 or more associated mappers. , storyboard Contains a storyboard that enhances gameplay experience. , marathon A map with a drain time of over 5 minutes. , improvisation Uses patterns that do not correspond to sounds in the music, often using hitsounds to add sounds in. , freeform An unrestrained and loose approach towards visual structure. , featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps.