I don't understand how this is a Sperm? In any case, the movement of the "Sperm" should be more fluid. I'm no programmer so i assume it's harder than it sounds. Best of luck to you :) I hope the next game will be something more entertaining and with a better concept in mind as well.
It's a really wonderfully made game. The music, and the storyline invoked a set of emotions i never expected from a game like this. Bravo Pegasgames. Bravo.