Repair costs should be either a constant amount or should be proportional to the amount of health repaired. Having a constantly increasing repair cost in a game where you're forced to repair every level because you have no way to avoid taking damage apart from some shitty 3-pixel-wide walls is ridiculous.
My only issue with this game is that when YOU crash, you have to go back to the last checkpoint. When the computer crashes, they get up and keep going. That's BS.
Wow. I'm glad I didn't look at comments before I played (and beat by the way) the game. You guys shouldn't be ruining peoples fun by posting solutions in the comments.
Either make the towers fire faster, the fast enemies move slower, or make it so the towers can't miss a freaking target. Good concept, love the art, but this game just doesn't have it.
Unfortunately, the learning curve in this game is just WAY too steep. You expect us to be able to preform precision maneuvers by level 4 and that's just ridiculous. Fix the ice-rinking effect, make the learning curve more realistic and revisit this. As for now, 1/5.
It's difficult doing some of your favorite MP3s because then you get distracted by the music and don't pay attention to what you're doing. =( Great game! I LOVES IT SO! 5/5