Addicting, but 1 glitch...
I had gotten to around 200 size, but touching the top of the screen locks you in place, for some reason, and at thatpoint it's impossible to go down. Not sure why that is, but it sucks when all you can do is watch helplessly as cells pour past your motionless cursor.
Kinda fun...
It was pretty fun, but until you get up to a certain amount of upgrades it's hard as hell, then when you hit it it gets way too easy.
By the way, I submitted my score of over a billion (only stopped cause I got all the upgrades and got bored...) it said I submited it, but it didn't show me a leaderboard... where would that be?
4th top score of all time
I got way too bored after getting 4000 kills, so I went suicidal :P Impossible Mode should get harder as you go, because I got to the point where as long as my computer didn't freeze, I could've kept going forever.
Nice
It sure is a nice game, but like some already said, the upgrade system isn't good and normal mode is too easy, while impossible mode is way too hard. But still, this game is addicting and fun.
Addictive and simple, I found myself a bit absorbed in this game. My only complaint is how easy this it is; perhaps making it more challenging - such as making the foes aggressive, perhaps - will improve this game.