Glitchy, fun to play
My character frequently fell through bricks on descent (even after I bought the vanishing block upgrade, not that doing so should technically help).
Spike guards frequently didn't work.
Nyan cat's price continued to increase even though it was expendable.
Once upon using Nyan cat close to the ground it shoved me inside of a brick where I continued to respawn, unable to jump or move every time there-after.
The epic face (250$ per rock steped on) activated mutliple times per rock block.
The Rage upgrade has no effect.
The "try again" screen takes too long to let me do another attempt. The upgrade UI is slow.
This being said I played the game for an hour.