If you think life was easy in the past you might think twice now as this tower defense game will surely shed some light on this matter. It turns out that the dinosaurs used to constantly attack the villages and you have to help the prehistoric citizens mount some turrets near the roads they know the dinosaurs will come. Constantly upgrade them and build more with the money you receive for each kill. Also you will get more rewards if you call out the waves earlier by clicking the skull as fast as you can once it appears. Dont be caught off guard though as they might pass your defense systems and scare off all the people.