Top Descriptors featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , freeform An unrestrained and loose approach towards visual structure. , chaotic Unpredictable map design, often testing unusual skillsets. , aim control Patterns with velocity or direction changes which strongly go against a player's natural movement pattern. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps. , marathon A map with a drain time of over 5 minutes. , variable timing Contains multiple timing points, usually required for songs not recorded to a metronome.