Top Descriptors playfield constraint Restricts object placement to a certain part of the playfield. , gimmick Focused on a single unique design or gameplay idea. , overlap reading Contains patterns where overlapped objects make determining note order and/or timing difficult. , slider tech Tests uncommon skills involving sliders, such as heavy use of kicksliders or aim on complex slidershapes. , reading Tests a player's reading skill, i.e. patterns that obfuscate note order and/or timing. , chaotic Unpredictable map design, often testing unusual skillsets. , marathon A map with a drain time of over 5 minutes.