A simple concept, but addicting in the same way as tetris. That is, no matter how good or bad you are, it is still possible to to get a ridiculous high/low score each game. But that, in turn, makes you keep playing.
Great concept, but there are definitely glitches which make the game way harder than it should be (In the running game, if you have to jump too close to a spot where you have to duck, you hit the spike before you even hit the ground, and in the DDR style game, the notes often aren't lined up with the music properly). Other than that, I enjoyed it.
I've died at least 3 times while I still had 2 buildings left, I also don't like how the shooting will just randomly stop sometimes. Would be a great game if it weren't for those points, but they're pretty huge deterrents.
Other than the extra balls taking away a life, the game isn't bad. Though I must say that the hardest part about beating the game is not getting bored and quitting part-way through