Legend of Zelda: A Link to the Past - one of my favorite games now in portable size!
Metroid Fusion - My first metroid game I completed and most played Metroid title
Metroid Zero Mission - I regret not getting this game sooner, got it during last generation
Advance Wars - Enjoyable, but I wasn't that good at it, never did beat the final boss
Golden Sun 1-2 - Loved both of the games, too bad the third one kind of sucked
Phalanx - I bought it on a whim, loved it, but it is pretty hard
Gradius Galaxies - My first experience with the franchise
Castlevania: Aria of Sorrow - My first Castlevania experience, loved it
Castlevania: Harmony of Dissonance - It was okay, but it came with Aria of Sorrow double pack at a discount price!
Breath of Fire - I enjoyed it for what it was, but didn't find it memorable
Pokemon Crystal - My most played Pokemon game and one of the first games I bought for GBA
Yugioh: Stairway to the Destined Duel - Ah, my secret love. This game's card battle system was so intuitive and fun, I couldn't stop playing it. Probably my most played GBA game.