One more year until you can buy cigarettes, lottery tickets, and porn. ;)
<a href=http://www.gamespot.com/users/dmiller1984>My Games (GameSpot)</a>
<a href=http://www.derekmiller.us/>My Website (In A Constant State of Construction)</a>
-Castlevania: Harmony is Dissonance for awesome Super Metroid-like gameplay.
-Puyo Pop is you want the best GBA puzzler and a really good single-cart multiplayer game.
-Zelda if you want to have the best 2D Zelda game on your GBA, and definitely buy it if you know some other people with GBAs and their own copies of Zelda. The multiplayer is awesome.
-Monkey Ball Jr. if you liked the GC version. This one is a terrific port. Multiplayer is great if you know someone else with the game.
-Duke Nukem Advance if you want a good FPS and multiplayer deathmatch (multi-cart only).
-ChuChu Rocket if you liked the DC version (this one is identical), and it comes with an additional 2,250 levels (seriously--they were made by Dreamcast players all over the globe using the DC level editor) and a great single-cart multiplayer mode.
-Sonic Advance 2 if you like the Genesis Sonic games
-Mario World & Yoshi's Island if you want some great ports of the best 2D platformers around.
-Breath of Fire 2 if you want an RPG that's not Golden Sun.
Try Game & Watch Gallery 4. It's got infinite replay value and all the games are great. Look for my review of the game in the Reviews section to read about it. It's my favorite GBA game to date, and strongly recommend it.