I think there are enough comments about the speed up button ;P
Putting it in the game would raise the score for sure..
Anyway this is a great and original TD game. 4/5 (5/5 with a speed up button)
Make the blocks breakable.
Give him like a purple suit or something for anti-copyright infringement.
Add mushrooms, fire flowers, feathers, yoshi and green mushrooms..
3/5 since of the copyright.
Too bad this game has only 3 lvls.
I'll rate it 5/5 anyway, since of it's nice concept and really relaxing music, but I would prefere about 20-30 lvls and maybe a duck function.
Save data does not exist.
OMG MCAFEE I WILL DESTROY YOU FREAKING COOKIE REMOVER. (for those who not know: The cookies McAfee deletes on my computer.. are saved data's of games)