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. , megacollab A map with 8 or more associated mappers. , multi-song Contains multiple songs within the audio. , gungathon A map with a drain time of over 10 minutes. , chaotic Unpredictable map design, often testing unusual skillsets. , freeform An unrestrained and loose approach towards visual structure. , progression Contains a gradual advancement in difficulty or concept across the map. , tech Tests uncommon skills. , slider tech Tests uncommon skills involving sliders, such as heavy use of kicksliders or aim on complex slidershapes.