I liked the random modifiers, and the occasional bombardment of smiley faces and their effects on enemies (even if I fully didn't understand why they were there). Only thing is is that eventually I fell into a system of spamming the spacebar in order to get rid of enemies, so some extra strategy put in there would benefit immensely. Another is that I didn't really understand the purpose of the slider in choosing the different modes, since later on you had an option to just click on certain battle stages (after you died in endless, I'm assuming they were for powerups). That, and when I tried to get out of the endless mode, where I started, to go try some of the battles, the game crashed on me. The premise and the art style were cute, and the game was certainly addictive. Well done.