Top Descriptors collab A map with two or more associated mappers. , difficulty spike Contains a sudden and significant increase in challenge within the map's gameplay. , variable timing Contains multiple timing points, usually required for songs not recorded to a metronome. , linear aim Patterns, usually jumps, that require the player to move continuously in a straight or nearly straight line. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps. , megacollab A map with 8 or more associated mappers. , accelerating bpm Features progressively increasing tempo.