Interestingly, a game’s official site doesn’t always show up early in Google search results, but you can see the entire list on the Nintendo site. Just go to the Master Game List and then click to filter results for “official Website.” You can see sites for DS, or for Game Boy Advance (or any other Nintendo console.) But some of the links are dead or mistakenly redirect to the Wii sites, so feel free to just check out the DSDiva list below. (And please consider bookmarking DSDiva or putting the site on your RSS feed.)

Advance Wars, a strategy game.
Animal Crossing: Wild World
Big Brain Academy
Brain Age
Chibi-Robo! Park Patrole, an action game featuring an environmentally savvy robot
Children of Mana, an action role-playing game
Donkey Kong Jungle Climber
Flash Focus
Hotel Dusk Room 215
Kirby Squeak Squad
Kirby Super Star Ultra
Legend of Zelda: The Phantom Hourglass
Mario Kart DS
Mario Party DS
Master of Illusion, a magic tips and tricks game
Metroid Prime Hunters
Metroid Prime Pinball
Nintendogs
Personal Trainer: Cooking
Pokemon games
Professor Layton and the Curious Village
Super Mario 64 DS
Trace Memory