Crisis of the Chrononaut

Youre a graduate student, working for a genius professor who thinks hes found the secret to time travel. Suddenly, the time machine hes working on goes beserk, then disappears. It seems the machine he was building is now tearing apart the fabric of time. Portals start appearing that connect to other times, including the Cretaceous period, the Ice Age, and pirate times. You can enter the different eras and explore, but hostiles from each of these periods can emerge to fight you as well. Your miss...