A video leaked of Crytek's Back to Dinosaur Island VR demo that was shown at last month's GDC 2015. Crytek used this demo to show off the VR support of its CryEngine in combination with the Oculus Rift VR headset so this 2D video is probably not doing it justice.
The environment and attention to detail on the dinosaurs is pretty impressive, with Crytek Producer Fatih Özbayram taking to Twitter to describe the demo:
"Our demo has a variety of interactions. One of them is the interaction with a Hollywood feel T-Rex which mimics your head movements. The narrative [of] our demo is you being a baby dinosaur sitting in the middle of a nest of other dinosaur babies about to hatch. We've chosen dinosaurs as we wanted to nod to the origins of Crytek".