Terrible.
First things first, I want to point out a glitch: right at the beginning, usually between the m and the O, the character sometimes vanishes and the game gets stuck. It doesn't happen all the time, but it seems to happen more often if I'm jumping.
The setting and plot, what little there is, is awful. Good G? Evil D? Scared s? Really? This almost feels like a parody of an art game. I could overlook it a bit if the gameplay was good, but it isn't. The character's slow walk and jump make it a chore, and even after going at it for a long time, I could never really get the hang of the momentum the fall objects had, which made some jumps far harder than they should be. I think the hit detection was off too; on this one part, I kept getting hit by a floating x that was well more than a full character's height above me. Not fun at all.