Write the number of each pokemon you like and see how the ecosystem go... Enjoy !
How it works : When a predator touch a prey, it eat it and evolves. The grassy pokemon is ated by the herbivore and the herbivore is ated by the predator. Two pokemon of the same category make 4 babys and disapear. A pokemon alone too long time dies. When the game look like a glitch, it's the ecosystem that has lost his balance.