Geometry Dash Silent Circles is an impossible 2.0 collaboration level created and published by Cyrillic and Silent. It is one of, if not the most popular impossible level, on par with Geometry Dash: Silent Clubstep.
This level may not have been the first to include humanly impossible mini-wave spam parts, according to Cyrillic. Realm of Bloodshadow, a level released before Geometry Dash Bloodbath, had wave parts with similar spam.
This level, on the other hand, introduced a more powerful form of an impossible wave. Instead of simply being spammed in mostly jagged corridors, Geometry Dash Silent Circles introduced a wave designed to be as difficult as possible. This wave is not only mini but also in two-player mode, requiring the player to control both waves at the same time. Both icons can move independently from each other, and blue orbs fill the corridor, further confusing the player. These wave parts would later appear in other silent levels like Geometry Dash Slaughterhouse, Slaughter's Hell, and Old Pitch Black.
This level defied many Nine Circles level norms at the time.
