Nintendo Pokémon Pikachu

Pokémon Pikachu, also known as Pocket Pikachu (ポケットピカチュウ) in Japan, is a limited series of two portable Pokémon digital pets (similar to Tamagotchi) featuring the famous yellow electric-type Pokémon, Pikachu. Released on March 27, 1998, in Japan (November 2, 1998, in North America), it was intended as an exercise toy and mentioned by Guinness World Records as the most popular exercise toy of its time. The first release, a yellow unit resembling a Game Boy, features a black and white LCD screen used to display animations of Pikachu's activities. Gameplay differs slightly from other portable virtual pets in that Pikachu does not need to be fed, watered, or cleaned up after. Instead, the Pokémon Pikachu unit can be strapped to a belt and used as a pedometer. With every twenty steps it counts, the Pokémon Pikachu credits its user with one watt, a virtual currency used to buy Pikachu presents. Additional activities become available as the player spends more time with their virtual Pikachu. If neglected, Pikachu will express anger and eventually refuse to recognize the player. The device has a yellow case and a monochrome screen. It has the same button layout as the original Game Boy. The directional pad is used to select options from the main and settings menus and adjust the numbers on the clock and Gift options. The Select button shows Pikachu's current friendship level. The Start button opens the settings menu, which contains options for sound, the current time, and resetting the step count. The A button confirms selection, while the B button returns to Pikachu. Additionally, a reset button on the front of the device completely resets the player's progress.