Thanks for the feedback everyone, it's really useful. I've started making changes based on it, and discovered a whopping big problem that I'm surprised nobody mentioned: Due to my switching around of sprites and such, the spores actually orbited around a point that was down and to the left of the gravity wells.
I guess nobody noticed because they never found any gravity wells anyway.
Still, I've fixed it now, and you can expect another build fairly soon.
EDIT: Wow, lol... 'Hello' is a horribly overpowered seed, even when I made it so it would only ever level up once. I left it running for at least 10 minutes while I was talking on the phone, and still ended up with a score of 4307
. I think I'll have to scrap the levelup mechanic entirely, which is a pity because I still like it in theory
EDIT AGAIN: No, actually, I'll keep it. 'Hello' may not be balanced with other seeds, but it's balanced within itself, in that a player with skill and timing can triumph over one with patience.