Summary: Decent game. Good graphics, original gameplay: but I got bored with it after a couple hours of play. When I purchased it, I was hoping for a game as good as Defense Grid, so I was slightly disappointed.
Summary: Absolutely gorgeous intro movie, and as others have said, an innovative twist on a tired genre. However, this game has a hypothesis, which is "is it as interesting to be the attacker in a tower defense game?" After playing this game for two hours, I have to say the answer for me is "no.