Great! It's simple, but catchy, fun and kinda addictive. Also, the game itself is quite challenging! The tiny details in the character's animation are really nice, even if only being a few pixels, it's quite expressive. Everything's really well wrapped! :)
Oh, I also had a small bug playing the windows executable: if using a resolution higher than 800x600 when launching the game, the game text becomes huge! :O Not a big problem, just a small detail, though! ;)