Top Descriptors mapping contest An entry for a mapping contest. , slidershapes Uses a large variety of slider designs. , slider tech Tests uncommon skills involving sliders, such as heavy use of kicksliders or aim on complex slidershapes. , tech Tests uncommon skills. , complex sv Changes slider velocity by large amounts in order to test the player's reading ability. , collab A map with two or more associated mappers. , visually dense Contains patterns where the amount of visible notes makes determining note order and/or timing difficult. , custom skin Utilizes custom skin elements and graphics. , perfect stacks Features perfectly overlapped stacked notes using low stack leniency. , chaotic Unpredictable map design, often testing unusual skillsets.