Top Descriptors tech Tests uncommon skills. , avant-garde Employs boundary-pushing and experimental philosophies to map design, often foregoing gameplay and aesthetic conventions to extreme measures. , 2B Includes gameplay elements with two or more objects placed simultaneously. The term originates from a Chinese transliteration of 'idiot'. , marathon A map with a drain time of over 5 minutes. , aspire Uses glitches to provide gameplay or visual effects that are otherwise impossible to achieve, originating from the annual Aspire mapping contest. , symmetrical Employs symmetry within the map design, often mirroring elements along the horizontal centreline. , streams Patterns requiring continuous movement and alternating, typically more than 9 notes. , bursts Patterns requiring continuous movement and alternating, typically 9 notes or less. , finger control Uses complex applications of rhythms in order to test the player's tapping ability. , cutstreams Streams in which the spacing of certain notes is much larger than the rest of the stream.