GameShark refers to a cartridge for Nintendo 64. The GameShark pack goes right into the game slot and then the game being played is placed on top of the GameShark. GameShark allowed players to use special cheats and different modes in many of the Nintendo 64 games. There were two Zelda games released on the Nintendo 64, Ocarina of Time and Majora's Mask. Players could use the GameShark in these games for special cheats like receiving unlimited Rupees.