Great way to kill some time. And Glooples.
This game wouldn't be all that remarkable, but when you factor in the awards, rewards, humor and surprisingly thorough science, you get something awesome. I was getting bored killing the things, and then a grey appeared. While I was trying to figure out how the hell to KILL the thing, it turned into a void eater. Sure, it killed me almost instantly, but it's that kind of weird gameplay that makes this unique. So, you don't quite get a 10, because it does get a little repetitive, but it's a nice game nonetheless.
You might want to consider adding RPG elements, as I'm sure others have said. Everything is better with upgrades, in my opinion. You may also want to give hints about how to unlock awards, considering how many you have. (Somewhere between "Oodles" and "Oh dear God.") And fighting anything bigger than a grey is almost impossible, but then again, that's the point, isn't it?