Top Descriptors marathon A map with a drain time of over 5 minutes. , featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , tournament custom A custom map for a playing tournament. , megacollab A map with 8 or more associated mappers. , chaotic Unpredictable map design, often testing unusual skillsets. , freeform An unrestrained and loose approach towards visual structure. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps. , time signatures Audio contains many changes in time signature or uses an uncommon time signature. , collab A map with two or more associated mappers.