This looks like the start of a grand idea, although I feel that you ran out of time. Controls aren't explained, and I can't really tell what anything does. Red balls make you smaller, green make you bigger, but to what ends?
In any case, I like the style. Check out sfxr for some really awesome/easy sound effects - it goes a long way.
Hey, man! I liked the concept a lot, it gave me a Spore-esque feeling of that beggining, (which I feel is the best part of the game).
I didn't bother not having controls explained to me as I like to find out stuff too :D, and I was surprised to find out I could control the character with the mouse. When I did I really enjoyed the gameplay, although I feel the controls could feel a little tighter.
Played it on my iPhone 3GS, worked perfectly! Interesting little game. I like that you let the player figure out what to do. Could definitely have benefitted from a little sound though. Good job! :)
I liked how at the start there were two different paths you could follow, plant seeds or grow into a fish. I had no problem figuring out the controls. I second the notion to use sfxr.
It took me awhile to realize that the red things were hurting me. As has been said, sound would have gone a long way, but this is still a fun little diversion.
Fun game with a neat feel. It took me a bit to figure out controls and plotline. I still don't know how to plant seeds - tried everything I could think of. But it was fun, and worked well. Funky art, and you evolve! Nice work.
I initially had a problem because I thought I died a few times and didn't realize what the different colored pellets did. I like the concept though and I think with more time you could have fleshed it out really well. I liked the animation on the amoeba stage.
Some explanation of the controls/goal would have been helpful. Some sound would have been nice as well. It fit the theme well, and it was fun enough :)
In any case, I like the style. Check out sfxr for some really awesome/easy sound effects - it goes a long way.