Top Descriptors featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , collab A map with two or more associated mappers. , mapping contest An entry for a mapping contest. , custom song Maps a song made specifically for the map. This includes songs created for a mapping contest which the map participated in. , large circles Uses larger-than-usual circles. Typically refers to maps with circle sizes below 3. , marathon A map with a drain time of over 5 minutes. , megacollab A map with 8 or more associated mappers.