nice graphics, nice sound, interesting gameplay. 

2 player feels too hectic with a shared health bar. it's way too easy to lose track of the balls and the players.... frustrating.  if each player lost a life from their own ball, with each players ball being a specific color, the game would be more fun. (in my opinion)

in the parts where i was playing by myself I felt more in control after my player 2 died, so perhaps the single player doesn't suffer from this. but 2 player just feels dumb because you're losing hearts all the time. 

over all, seems fun, but beware if you're buying it for the 2 player aspect. its fucking hard. lol