I describe evolution at the time the player inputs. Evolution takes along time so it could take a couple millions of year for something interesting to appear.
I am Ecosystem evolution. I am the narrowest or of a speculative evolution article. The planet is 90% water and average of 79 degrees Fahrenheit. It start with cod, salmon, canaries, rabbits, krill, shrimp and elk/deer. The only predators being a small amount of wolves that mostly hunt the bunnies and some of the deers. There are oak trees, berry bushes, and many types of kelp. I will show you what happens to these animals over billions of years.