Super clever concept, its very simple but it holds up for a while. Love it how the mechanics of the game naturally make the player move in sort of a radial motion, and how it also encourages smooth movement since quick twitches will break up the fragments and make it harder. Its very pretty too :)
I couldn't try the multiplayer but i within 2 minutes of playing the game i already know that it would be incredibly fun, and ever prettier with two colors swirling around the screen. Very impressive, awesome job!