This game was incredibly frustrating but so rewarding when I (okay, my girlfriend) finally beat it. Great level design with a good difficulty curve and checkpoint locations. I would have liked some more obvious coloring, though, to differentiate between what hurts the UFO, cow, or both. With just the sprites, I got confused a lot, and I didn't make the (admittedly obvious) correlation between the blue electricity hurting the UFO. Good music. I'd say good death sound too, but I heard it way too much.