Jurassic Park was released on nine separate video game consoles. Nearly all of them borrow elements from the Jurassic Park novel by Michael Crichton on which the film was based. In the case of the Sega Mega Drive version, the Jungle River attraction and its pump house, as well as the use of Procompsognathus, were elements taken from the novel. Due to the game's critical success, a sequel of the Genesis game was also released, called Jurassic Park: Rampage Edition, which relies more on action and more on-screen enemies.