From Microsoft: Introducing 30 new animals and more than a dozen dinosaurs, ranging from the adorable dodo bird and massive American mastodon to the saber-toothed cat and T. rex, Zoo Tycoon 2: Extinct Animals provides new ways for players to experience the award-winning gameplay of Zoo Tycoon 2. Aspiring zoologists will be challenged to dig for fossils, bring animals that once roamed the earth thousands of years ago to life in the Extinct Research Lab, and wrangle rampaging dinosaurs with a tranquilizer gun.