OK, my own GBA games first, *deep breath*
Boktai (You play a vampire killer in this game, and your weapon is a gun that charges itself using sunlight. Actual sunlight.
),
Final Fantasy Tactics (Japanese RPG with an isometric view),
Kingdom Hearts: Chain of Memories (RPG (again) that picks up from where the PS2 game left off. So if you haven't played the original, you can give this a miss),
Metroid Fusion, Metroid Zero Mission (Classy side scrolling shooter, which are very inventive),
Mario Kart (Great game, but superseded by the DS version),
Megaman Battle Network (kinda like
Pokémon apparently. I dunno, it's belongs to my brother
),
Sonic Advance (Got the first and third games. 'Nuff said
),
Super Puzzle Fighter (Great puzzle game featuring the
Street Fighter characters.),
Wario Ware Inc.: Minigame Mania (Absolutely nutso game. Perfect for killing small amounts of time. You go through a series of minigames, each lasting 5 seconds or so and as varied as cutting someone's hair, to lifting weights
).
As for my DS games... *another deep breath*
Advance Wars: Dual Strike (Tactical strategy game, where you control one side in a war. Quality animation),
Bomberman (got this today for the multiplayer side of things. Single player might be OK, but I can't see it lasting too long. Multiplayer is where it's at with this game
),
Dr. Kawashima's Brain Training (not so much a game
per se, but fun nonetheless),
Mario Kart DS (more Mario fun. This is a replacement to the GBA game (you'll see this a bit), mainly because you can play a lot of DS games multiplayer, with just one card),
Meteos(block based puzzler, which is even more frantic than
Tetris. You have to 'launch' columns of blocks that fall from the top of the screen by joining three or more either vertically (to raise just that one column) or horizontally (to launch a series of columns),
Metroid Prime: Hunters (I've only got a demo card for this, but it does seem to be a pretty nifty FPS, and with the stylus, it's a great method of control, which has always been the bane of consoles and FPS types),
Nintendogs (bow-wow
),
Pac-Pix (Pac-Man for the DS generation
; you draw your Pacman on the screen in the direction you want him to move, and you create the walls as well.),
Phoenix Wright: Ace Attorney (Lawyer-'em-up
. Reminiscent of the ol' point'n'click puzzle games (like
Sam 'N' Max and
Monkey Island. Good manga stylings as well),
Polarium (puzzler which asks the player to switch blocks from white to black or vice versa. Good fun, but there are (now) better puzzle games),
Resident Evil: Deadly Silence (A port (including dialogue and video) of the original PSone game, with a DS specific mode, where the knife that your character wields can be controlled by slashing the screen. I bought it because I love the cheesy dialogue
),
Super Mario DS (A port of
Super Mario 64 on the N64, with some extra games (which are numerous and a lot of fun)),
Super Monkey Ball: Touch'n'Roll (DS version of the Sega game. Monkey ball madness ahoy.),
Trauma Center: Under The Knife (Surgeon-'em-up
, you play a young doctor who has to perform all manner of insane operations. Bloody difficult at times, but not because of bad game design. It will be your own reactions that are too slow
) and finally,
Wario Ware Touched (more minigame goodness)
Now, there has got to be something in there that you like
