Interesting tower defense. The idea of having a loop around the track and enemies targeting multiple towers is cool, though I found it quite hard to guard against all the enemies after a certain amount of time. The unique tower types are cool, but the fact that they break after a certain time is a bit frustrating. The generated levels can sometimes spin the layout such that some castles are much harder to defend. My favourite tower was the one that shoots every enemy in range, though I didn't get much further after unlocking it as I wasn't able to get a high enough score.