Thanks for all the comments! Personally, I wasn't very happy with the final controls or camera. During the compo they varied from even-more-frustrating to great in 90% of situations but completely broken in the other 10%. I actually wanted your character to feel a little inadequate at the start so the species becomes a little more controllable as you evolve, but the problem with hills breaks that.
@Raohmaru You win and the game ends, when you become the "perfect species" - by reaching a certain value in all your stats. Most of your potential mates at that point are going to have the possibility of decreasing your abilities at that stage though.
@hgcummings The yellow cubes give you points, red give health and blue gives more time. The idea was that the cubes don't regenerate so they give you a boost in the start, to prevent the game getting easier rather than harder as you become more powerful. They were a bit last minute though :O