Very tough choice and it's hard to pick a favorite but in the end I have to pick Jurassic Park Part 2: The Chaos Continues for Super Nintendo. Out of all the Jurassic Park games I've played that one the most and have many memories with it's two player.
The other considerations were:
Jurassic Park SNES
The Lost World: Jurassic Park PS1
The Lost World: Chaos Island PC
Operation Genesis PS2