More a puzzle game than a tower defense. Only a few levels and only quick tower is usefull.
It could be a good game, it seems to be a prototype of a game.

Nice quick little rendition of a tower defense game. Strategy becomes easier when you realize that the quick towers are the only ones fast enough to keep up with the general pace of the game.
all targets are the same therefore all towers are the same, varying by degree or level. I understand the frantic concept behind the game but why have a variety of towers if there is no variety of attackers. In general, I really enjoyed the game. btw, the music was appropriate to the style of the game

The animation is smooth, the graphics are really simple but work really well. The music isn't annoying and the sound effects are good for the style you were going for. Good job overall, the idea is a good take on something that's been around for a while whilst still having a fresh twist