The (G&W;) series were handheld electronic game made by Nintendo and created by its game designer Gunpei Yokoi from to . Most featured a single game that could be played on an LCD screen, in addition to a clock and an alarm. Most titles had a 'GAME A' and a 'GAME B' button. Game B is usually a faster, more difficult version of game A. The game Squish is a notable exception; here game B is very different from game A. Manhole is another exception in that Game B is a 2 player version of Game A, rather than it being noticeably faster or more difficult. Climber is an example of a game that does not have a 'GAME B' option.
The units used LR4x/SR4x "button-cell" batteries, the same type used in most laser pointer devices. There are variations in height for button cell batteries, and the G&W; units used the shorter height variety. Specifically, they were packaged with Maxell LR43 batteries.
Some of the titles available in Game & Watch format were games varying from Mickey Mouse to...
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