Game Boy

The Game Boy was the first, excluding the Game and Watch line, of battery-powered handheld game consoles sold by Nintendo, and is the third system that allowed a portable Legend of Zelda game, behind the Zelda Game Watch and Zelda Game & Watch. It is one of the world's best-selling game system line, selling over 118 million units worldwide to date since its release 1989, and has spawned many successful spin-offs, including the Game Boy Pocket.

Spin offs
The Game Boy Pocket was a smaller, more portable version of the Game Boy, the Game Boy Color, a system that was both portable and in color, the Game Boy Advance which was more technologically advanced, and had two extra buttons, and the Game Boy Advance SP, which was a smaller Game Boy Advance, but with an adjustable backlit screen.

The Legend of Zelda Games of the Console
The original Game Boy had two Zelda releases: Link's Awakening, and Link's Awakening DX; the latter was an expanded version of Link's Awakening that was actually playable as a standard Game Boy game, but could also be played as a full-color Game Boy Color game instead of keeping the original shades of grey as most games did. However, a special dungeon, the Color Dungeon, could only be played on a Game Boy Color.