Top Descriptors freeform An unrestrained and loose approach towards visual structure. , progression Contains a gradual advancement in difficulty or concept across the map. , messy Visually chaotic and intentionally disorganised patterns, often involving many overlaps and unequal visual spacing between objects. , chaotic Unpredictable map design, often testing unusual skillsets. , collab A map with two or more associated mappers. , variable timing Contains multiple timing points, usually required for songs not recorded to a metronome. , complex sv Changes slider velocity by large amounts in order to test the player's reading ability. , simple Accessible and straightforward map design. , 2B Includes gameplay elements with two or more objects placed simultaneously. The term originates from a Chinese transliteration of 'idiot'. , gungathon A map with a drain time of over 10 minutes.