Game Boy Advance

The Game Boy Advance is a handheld game system created by Nintendo. It was the fourth system in the Game Boy series. It has backwards compatibility, to the Game Boy and Game Boy Color.

Game Boy Advance SP
The Game Boy Advance SP was an upgraded version of the original GBA. It featured a new design, with a clamshell style and front-lit screen. It also came with a rechargeable battery, rather than requiring AA's. The only major drawback was the absence of a headphone jack. The "SP" stands for "Special". Later Nintendo also released a back-lit version.

Game Boy Micro
The Game Boy Micro is the third design of the GBA. At a size of only four inches wide, two inches tall, less than an inch deep, and a weight of 2.8 ounces, it is smaller than any other system in the Game Boy line. It's screen is slightly smaller than that of the GBA and SP, but it maintains the same resolution. It is not backwards compatible. It comes with a backlight for playing in the dark.

Game Boy Player
The Game Boy Player was not an actual system. Instead, it was an add-on accessory for the Nintendo GameCube which allowed players to play Game Boy Advance games on their televisions, much like the Super Game Boy. A few games had a rumble feature which took effect only when they were played with a standard GameCube controller. Later one though, Nintendo added a smaller version of one to the front of the Nintendo DS.

Trivia

 * In Luigi's Mansion, there's a Boo called "Game Boo Advance".
 * The Game Boy Horror SP is a pun off the GBA SP.