Top Descriptors complex sv Features large changes in slider velocity. , slider tech Tests uncommon skills involving sliders, such as heavy use of kicksliders or aim on complex slidershapes. , improvisation Uses patterns that do not correspond to sounds in the music, often using hitsounds to add sounds in. , chaotic Unpredictable map design, often testing unusual skillsets. , download unavailable Cannot be downloaded from the osu! website, often due to a DMCA takedown notice.