Use arrow keys to move. Space zooms out and a zooms in. Check graph by pressing g and data by pressing l. I recommend a size of 3.5. This is a natural selection evolution with Unicaudarius, a creature used to show evolution. They slowly adapt and evolve to survive in the given environment. The most common Unicardaria is the best suited in the environment, and you can look at each evolution they have made to adapt. Try to get all of the achievements!