The Sega Genesis game based on the movie/book Jurassic Park differs from games created by Ocean for other platforms. Basically, Sega's Jurassic Park is a side-scrolling action game. You jump from platform to platform, collect weapons and health items and try to reach the end of the level with all your lives intact.
This version of Jurassic Park has an interesting twist, though. You can play him either as Dr. Grant or as Velociraptor. The story and level design changes depending on the character you are using.
