very good for a first game (it isnt a shootorial and it actually works) now maybe you should add some other things to this like other towers and enemys
I have been looking forward to this for ages and i cant help but feel a little dissapointed, still fun but the efficency aspect doesnt really add anything to the game as its easy to get full on every level. lose the efficency put more effort into harder levels instead.
Oh and no i dont want to buy a prius....
Very good like the fact that it has an original twist on the TD gametype
one comment change the graphic for the egg layer looks like a placeholder image