+1 for all of this games:
Phoenix Wright / Apollo Justice (Ace Attorney series) [ADVENTURE]
Pokemon Pearl/Diamond/ Platinum [RPG]
Professor Layton and the Curious Village [PUZZLE]
The World Ends With You [RPG]
Trauma Center: Under the Knife 1 and 2 [MEDICAL SIMULATION]
Zelda: Phantom Hourglass [ACTION ADVENTURE]
Animal Crossing: Wild World [LIFE SIMULATION]
Chrono Trigger DS [RPG]
Disgaea: Hour of Darkness [TACTICAL RPG]
Final Fantasy IV [RPG]
Final Fantasy Crystal Chronicles: Ring of Fates [ACTION RPG]
Final Fantasy III [RPG]
Hotel Dusk: Room 215 [ADVENTURE]
Mario & Luigi Partners in Time [RPG]
Ninja Gaiden Dragon Sword [ACTION ADVENTURE]
Osu! Tatakae! Ouendan! [MUSIC]
Rune Factory: A Fantasy Harvest Moon (series) [LIFE/FARMING SIMULATION]
Soma Bringer [ACTION ADVENTURE]
Final Fantasy Tactics A2: Grimoire of the Rift [TACTICAL RPG]
Final Fantasy XII: Revenant Wings [TACTICAL RPG]
Lunar Knights [RPG]
Pokémon Mystery Dungeon (series) [ RPG]
Time Hollow [ADVENTURE]
Big Brain Academy 1 and 2 [PUZZLE]
Dragon Quest Monsters (DQM): Joker [RPG]
Etrian Odyssey [RPG]
Fifa 08 [SPORTS]
Final Fantasy Crystal Chronicles Echoes of Time [ACTION RPG]
Final Fantasy Fables: Chocobo Tales [RPG]
Fire Emblem: Shadow Dragon [TURN-BASED STRATEGY]
Kingdom Hearts 358 2 Days
Lock's Quest [REAL-TIME STRATEGY]
Lost Magic [RPG / REAL-TIME STRATEGY]
Luminous Arc [TURN-BASED STRATEGY]
Luminous Arc 2 [TURN-BASED STRATEGY]
Nintendogs [SIMULATION]
Pokémon Ranger Shadow of Almia [ACTION RPG]
Suikoden Tierkreis [RPG]
Yu-Gi-Oh! (series) [CARD STRATEGY]
Avalon Code [ACTION RPG]
Lost in Blue
Mario Party DS
Pokémon Ranger
Ragnarok Online DS
Rondo of Swords
Shin Megami Tensei: Devil Survivor
Tales of Hearts (Anime/CG Movie Edition)
Tales of Innocence
Valkyrie Profile: Covenant of the Plume