By Muffy450 · Verified by Diamond · 2021
Sakupen Circles is a 1.9/2.1 Extreme Demon collaboration hosted by Muffy450, rooted in the iconic Nine Circles style. Originally created as a humanly impossible challenge, the core difficulty comes from controlled mini-wave spam through a two-block gap. Diamond verified it on December 29, 2021 after over 220,000 attempts. The highest attempt count belongs to ezzzzka with an astounding 1,107,185 attempts. It is the hardest rated Nine Circles level ever.