advance wars - its a turn base strategy game where you and your opponents each take turns to order your troops in order to destroy the enemy troops or capture their base. really addicting game.
Zelda: a link to the past - well its zelda cant go wrong with that
Metroid Fusion - sweet game.
pokemon ruby/sapphaire - if your into pokemon
oh yea get a mario game, super mario advance 2 or yoshi's island.