[osu!] Cirno's Perfect Math Class by Cookiezi (TAG4)
This map is intended to be played with 4 players in coop mode, each player plays only one color of hitcircles. If you try to play this alone, it's (almost) impossible!
Cookiezi shows us one more time, that he is the god of osu :)
Once again: THIS IS NOT A HACK, HE IS JUST THAT GOOD!
Map by Louis Cyphre: http://osu.ppy.sh/b/87570