Mario Party DS NanoStray Mario and Luigi Bowsers Inside Story Mario Hoops 3-on-3 Mario Kart Yoshi's Island Yoshi Touch and Go Assassin's Creed II Super Princess Peach Metroidrime Hunters Metroid Prime Pinball And others, I'll add them when I remember them.
Castlevania Series [Dawn of Sorrow,Order of Ecclesia,Portrait of Ruin] hehehe I forgot to add Castlevania.lol too many games. Ninja Gaidenragon Sword Kingdom Hearts 358/2 Days Nostalgia Pokémon Series [Mystery Dungeon{Explorers of Time/Darkness/Sky},Ranger{Ranger,Shadows of Almia},and the normal one{Pearl,Diamond,Platinum}] Sand of Destruction Super Robot Taisen OG Saga Endless Frontier Suikoden Tierkreis [I really enjoyed this one.Great game] Trauma Center Under the Knife 2 Final Fantasy III Final Fantasy XII Revenant Wings Final Fantasy Crystal Chronicles Series [Ring of Fates,Echoes of Time] The Legend of Zelda Series [Phantom Hourglass,Spirit Tracks] Mario and Luigiartners in Time Mario and Luigi:Bowser's Inside Story Sonic Rush Scribblenauts Megaman ZX Megaman ZX Advent Final Fantasy Tactics A2 - Grimoire of the Rift [Great one] Custom Robo Arena Avalon Code Animal Crossing - Wild World Jump!Ultimate Stars Shin Megami Tensei - Devil Survivor Harvest Moon Series [Harvest Moon DS,Island of Happiness,Sunshine Islands,Rune Factory:A Fantasy Harvest Moon,Rune Factory 2] Luminous Arc Series [Luminous Arc,Luminous Arc 2:Will] I've played all of them and each one is worth Oh,I didn't listed the japanese ones and the ones that were not released yet,ok?If you want to know just ask
Actually all DS games are good depending on the players.. every players have their likes and dislikes.. so I would say ALL DS GAMES ARE GOOD ! if you exclude those crap ones which was developed by some unknown company..