As the proud leader of the Dino Dudes, it's up to you to lead your hairy band of Cro-Magnons to the top of the food chain. Discover fire, weapons, The Wheel . . . battle dinosaurs and rival tribesman . . . and do everything you can to survive – so your kids can someday invent cool stuff like malls, video games and of course, the bacon double-cheeseburger.