Cool, but kinda frustrating
I gotta admit, I didn't get past level 3, but if the rest is just as cool, this game is awesome.
I quit playing after trying level 3 several times. There's just not a real sense of control over your... embryo thing and those green thingys bump you up faster than you'll go down. That was kind of like really frustrating.
But besides that, the graphics and all are truly awesome. I also liked the way you had to control your sperm in the first level.