Best GBA games for my DS

Platformers: Sonic Advance series, Super Mario Advance series, Klonoa series, Donkey Kong Country 2, Kirby series, Rayman Advance, Mega Man Zero series, Mario vs. Donkey Kong, Drill Dozer

RPGs: Final Fantasy Advance series, Golden Sun series, Pokemon series (preferrably Fire Red/Leaf Green and Emerald), Lunar Legend, Sword of Mana, Summon Night series, Mario & Luigi, Riviera

Strategy: Fire Emblem series, Advance Wars series, Final Fantasy Tactics Advance, Tactics Orge, Yggdra Union.

And I could've swore you had a DS already.

Am I the only person to think that Fire Red/Leaf Green was a total failure? To be honest I really don't think they can compare to the rest of their own series. ._.

Allow me to add support to Golden Sun and Fire Emblem (although I'd glady toss in Sacred Stones from the FE series too).

GS is strictly turn-based RPGing with massive worlds to explore, excellent dungeon design, a great battle system, team setups... well, I could go on and on. Make sure to play the two in order, because Lost Ages carries on from the first game which including transffering stuff. It's the only way to get the full experience.

Fire Emblem is your SRPG choice. The gameplay focus is largely on strategic use of your units but the game uses a lot of RPG elements like levelling up and shopping. The basics are simple to understand, like what weapon has what advantages, what units are capable of, hwo to use items, shopping etc but there is a lot of depth involved. Sacred Stones is the inferior of the two FE games due to having a much less interesting story and being overall easier but I still think it is worth the time, after you've gone through the other FE first.

The Legend of Zelda: The Minish Cap

My favorite GBA game, ever.

Medabots AX: Rokusho. I think someone already said that though....oh, and Rayman Advance is a great platformer.

*EDIT*: Medabots and Medabots AX are different games.

Pokemon series
Final Fantasy Advance series
Dragon Ball Z Buu's Fury
Mario & Luigi: Superstar Saga
Fire Emblem series
Lunar Legend
Megaman Battle Network series
Dragon Ball Z Legacy Of Goku II
Sword of Mana
Summon Night series
Golden Sun series
MrgamanZero series
Dragon Ball Z Legacy Of Goku
The Legend of Zelda: The Minish Cap
Medabots: Metabee and Rokusho Version
Advance Wars series
Final Fantasy Tactics Advance
Tactics Oger
Shining Force: Resurrection of the Dark Dragon
Mario series
Sonic Battle
Breath of Fire series

If you know your Kanji definitely get Narikiri Dungeon 3.Best RPG ever made for GBA/SP

Definitly get Fire Emblem and Pokemon Emerald. The other games you will want are the Super Mario Advance series, and Pokemon Red Rescue Team (Which is completely different from any other Pokemon game).