Top Descriptors collab A map with two or more associated mappers. , chaotic Unpredictable map design, often testing unusual skillsets. , featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , slidershapes Uses a large variety of slider designs. , megacollab A map with 8 or more associated mappers. , marathon A map with a drain time of over 5 minutes. , slider animation Succession of sliders as individual frames to create the illusion of fluid motion. , 2B Includes gameplay elements with two or more objects placed simultaneously. The term originates from a Chinese transliteration of 'idiot'. , aspire Employs intentionally unrankable decisions to provide gameplay or visual effects that are otherwise impossible to achieve, originating from the annual Aspire mapping contest. , avant-garde Employs boundary-pushing and experimental philosophies to map design, often foregoing gameplay and aesthetic conventions to extreme measures.