Sorry, bad rating. I'm sure this was a nice learning experience for you but you should have come right out with the tutorial or just kept this to yourself until it was actually a game. Games have goals. This doesn't.
Something could be said here about the blind leading the blind. Or maybe just the careless leading the clueless. 1/5 only because it gives me a point to do it.
Way too easy. Once you start seeing viruses you just have to dodge until the enemy is wiped out. I never chose to split, size is safety. There is no incentive to split.
At the same time, the only way to win lvl 12 is to let yourself get infected and try to eat the enemy before you bite it, which I think sucks.