A hardcore dinosaur survival game. You're a primitive human on a randomly generated island full of dinosaurs. Your only weapons are spears, clubs, bows, etc., no guns. You can't have the dinos as mounts or pets, you are trying to survive them in their domain. The goal is to survive and build a base that can provide you with enough protection to continue surviving while exploring the mysteries of the island where you can. I imagine it would be quite difficult to do this.