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Tetris is the best selling Gameboy Game.
I think Super Mario World for the game boy advance.
depends what game your playin lol.
A gameboy.
Your Gay.. Its a good game!
Boktai 2: Solar Boy Django MegaMan Battle Network 5: Team Colonel
Well when the game-boy came out there were many exciting games like super Mario which was highly popular but having the game boy since it came out the best game is Super Mario Advance because it has many cool stuff like mini games, and amazing story, and the fun never ends with playing with your friends
The book "A Million Shades of Gray" by Cynthia Kadohata is about a boy and his elephant in Vietnam, not dogs.
I think the best gameboy ever mde is the rare gameboy advance sp with the back light
Game Boy and Game Boy Pocket
Best place to look is Ebay.