Too easy, Needs Badges and a End Game screen, like Trajen said "What no credits" How would people know who made it without credits? That's really lousy.
7509 = my first attempt i got to level 3
Evaluation:
This game has potential keep working at it it needs more towers and you need to make the levels go easy to hard like say for the first level have 18-23 enemies then the next level have 23-30 making it get harder each time instead of having 60 enemies in level 1 all in all i think its an epic game 5/5 and favored it and if this is your first game well excellent job my first game is to glitchy (i am still making it) so if this is your first then you are going to be a good game designer and if you are one well your someone to look up to for new designers right up there with valve and algoryx