The game boy Advance was released in may, 2001, and cost 100$. The code name of this project was Project Atlantis. Game boy advance was a successor to its game boy color. it also was backward compatible, but was not just compatible with game boy color, but with game boy. Nintendo has most of the market because of the backward compatible with two of there gaming system replaces a few years ago. The GBA has a 2.9" LCD screen. it used two AA batteries, and lasted about 15-20 hours, and the weighted 140g. The game boy systems use cartridges. the games are still selling today, and new games are still developed. while the game boy advance has gone thought lost of changes over the years. which will be talked about later on. on ebay you can find this system for about $30 used, and $40 new.

Gameboy Advance SP was the new version of the game boy advance, but played the same games, no processor upgrade. just changes to the system look and a few other things. release on march 2003, and cost 100$ the changes were the design of the system, the batteries, the first system to use lithium ion batteries. and having its own black light. the GBA SP had a game hours of about 18 with light off and 10 with it on.

Game Boy micro released on September 13, 2005. Game Boy micro was the next version of the Game boy advance system which was much smaller and with a screen size of 2"x 4". With a brighter screen and to be able to change the brightness of The light. One major difference other then the size of the system of it did not support its older versions of Game boy and game boy color.

Links
GameStop - Wiki Gameboy Advance