Casper is a game based on the Casper film, which was developed by Natsume. The game pits you in the role of the friendly ghost trying to make a friend and a second chance at life instead of scaring everyone away. The player controls Casper, followed by Kat Harvey whom he has to protect from any danger. Being a ghost, Casper can pass through walls and other obstacles, but he can go away from Kat too much, or else Carrigan's ghost will abduct her. The game follows loosely the plot of the movie.