Game Features: - Free roam with dinosaur family. You can also just keep it cute in the Dinosaur Dash or Pet Monster Creator. On this dinosaur island�s road, you will meet Trex, Pterodactyl and many other extinct dinos. The Original version of Tyrannosaurus Rex, and the 1st Dinosaur/Creature added into Dinosaur Simulator. Starting Dinosaur Once You Start The Game,Your Starting Dinosaur Was The Tyrannosaurus Rex(Also Known As T-rex). Game Features:� Free roam with dinosaur family.� Stunning 3D forest map.� Lots of dinasaur kinds.� Wild animals. Gallery: About Ultimate Dinosaur Simulator Discover a long lost prehistoric world and rule over it as an all mighty Dinosaur! The Tyrannosaurus rex was one of the first dinosaurs to receive a skin. Monitor changes of Ultimate Dinosaur Simulator rating. We collect 251 of the free online games listed.