Top Descriptors featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , marathon A map with a drain time of over 5 minutes. , collab A map with two or more associated mappers. , megacollab A map with 8 or more associated mappers. , slidershapes Uses a large variety of slider designs. , large circles Uses larger-than-usual circles. Typically refers to maps with circle sizes below 3. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps. , difficulty spike Contains a sudden and significant increase in challenge within the map's gameplay. , streams Patterns requiring continuous movement and alternating, typically more than 9 notes. , chaotic Unpredictable map design, often testing unusual skillsets.