Beatmap Listing » Various Artists - _IceRain's 6K Advanced Collection

The level of 6K beatmaps we have uploaded are indicated by the number in brackets ([ ]). The difficulty rating is determined by the difficulty of the beatmaps and is manually marked on the beatmaps by the mapper, based on the principle that the higher the difficulty, the higher the rating. As more and more beatmaps from the 6K community have adopted this level system, the system has continued to improve and update itself, resulting in the current version.