damn! I thought of making a game were you are the wave, but couldn't figure out how to make it fun or even playable, I'm glad you did and were brave enough to make it!
I agree with the previous comments about the speed up button, maybe you could use time as point, so you make us wanna do it faster. Also, different types of waves?? I don't know, I just wish you make bigger once the jam is over.
Congrats!!