Wage an uncompromising war of the species in the continuation of the popular strategy game! Enjoy two new episodes with a multitude of levels, complete with comics to tell you all about the heroes' adventures, their search for fuel for the time machine, and the nuances of life in a predatory era.

Use powerful inventions to fight off hordes of vicious dinosaurs! Build defensive towers and survive in the Ice Age! Can you help the scientist and his electronic assistant defend the time machine?