Top Descriptors featured artist Features song(s) composed by artists in osu!’s Featured Artist listing , marathon A map with a drain time of over 5 minutes. , collab A map with two or more associated mappers. , variable timing Contains multiple timing points, usually required for songs not recorded to a metronome. , storyboard Contains a storyboard that enhances gameplay experience. , bundled A map that might come pre-downloaded upon installing osu! for the first time. , time signatures Audio contains many changes in time signature or uses an uncommon time signature. , gungathon A map with a drain time of over 10 minutes. , megacollab A map with 8 or more associated mappers. , chaotic Unpredictable map design, often testing unusual skillsets.