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Official Site: Nintendo

Game & Watch or G&W is a line of handheld electronic game produced by Nintendo from 1980 to 1991. Created by game designer Gunpei Yokoi, each Game & Watch features a single game to be played on an LCD screen in addition to a clock and an alarm.

43.4 million copies of the 59 games were sold worldwide. It was the earliest Nintendo product to garner major success. The device was known as Tricotronic in Germany.

In 1979, Gunpei Yokoi, traveling on the Shinkansen, saw a bored businessman playing with an LCD calculator by pressing the buttons. Yokoi then thought of an idea for a watch that doubled as a miniature game machine for killing time.

The units use LR4x/SR4x "button-cell" batteries, the same type used in most laser pointer or handheld calculators. Different models were manufactured, with some having two screens and a clam-shell design (the Multi Screen Series). The Nintendo DS and Game Boy Advance SP later reused this design.

Mr. Game & Watch has not been a contender in any CBUB matches.