Top Descriptors mapping contest An entry for a mapping contest. , collab A map with two or more associated mappers. , 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. , overlap reading Contains patterns where overlapped objects make determining note order and/or timing difficult. , complex sv Changes slider velocity by large amounts in order to test the player's reading ability. , high contrast Uses flashy ideas to follow changes in the music, creating stark differences between different sections of the song. , slider tech Tests uncommon skills involving sliders, such as heavy use of kicksliders or aim on complex slidershapes. , slidershapes Uses a large variety of slider designs.