This game is on the border of being very satisfying, but it's a little hard to tell what's happening. It is indeed very chaotic, but there doesn't seem to be an obvious goal to work towards (besides trying to spawn in as many blue guys as possible). It almost feels like a survival of the fittest type of game. Protect the blue guys from the green guys (mutations?). But what about the other colors?
I think you have a lot going for this game, and with a few more mechanics I'd definitely play this kind of game more! I like being able to drag the blue guys around. Trying to protect them was my first instinct, and I think you should work with that a little. Maybe give the bad enemies mean looking faces? Other colors could be good genes that power you up. That's my opinion at least. Overall, nice job doing this all from scratch!