Think of an animal, any animal at all. It could be a shark, a squid, a snail, or even a human like you! Every single animal has a secret history. It is a death-defying adventure that has happened across millions of years, called evolution. On every page, you will discover a new animal with its own exciting story to tell. It's up to YOU to make the decisions that will lead to their next evolutionary step. Can you survive to the present-day or will you face extinction along the way?