Unity5games has released a demo of a scene they created from Jurassic Park with the Unity engine:
Players can enter and exit the car, choosing to walk around the area while the T-Rex breaks out and walks around the area itself.
You can find the demo here: https://unity5games.itch.io/t-rex-breakout-free-dinosaur-game
I think it's pretty damn good looking for Unity, though it has obvious performance sisues, even for a demo.
It'd be nice to see a new Jurassic park FPS or third person game (non VR based).