GameShark

GameShark is the brand name of a line of video game cheat cartridges and other products for a variety of console video game systems and Windows-based computers.

Since January 23rd, 2003, the brand name has been owned by Mad Catz, which marketed GameShark products for the Sony PlayStation, Xbox, and Nintendo game consoles.

Players load cheat codes from GameShark discs or cartridges onto the console's internal or external memory, so that when the game is loaded, the selected cheats can be applied.

[1] It was originally released for the Sega Saturn and Sony PlayStation consoles in January 1996.

[2] It was a runner-up for Electronic Gaming Monthly's Best Peripheral of 1996 (behind the Saturn analog controller).