A Sound Of Thunder (XB)

Go back to the Jurassic period and go hunting for dinosaurs that make T-Rex look like a cute puppy. There are three rules that you must obey if you want to participate. Don't change anything in the past, don't leave anything behind, and don't bring anything back. Unfortunately someone screwed up. You play Travis Ryer, the man who must solve the mystery and sort out the mess that might just mean the end of human existence. Time is definitely not on your side.