Top Descriptors 2B Includes gameplay elements with two or more objects placed simultaneously. The term originates from a Chinese transliteration of 'idiot'. , collab A map with two or more associated mappers. , chaotic Unpredictable map design, often testing unusual skillsets. , complex sv Changes slider velocity by large amounts in order to test the player's reading ability. , avant-garde Employs boundary-pushing and experimental philosophies to map design, often foregoing gameplay and aesthetic conventions to extreme measures.