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>Buying a 3DS for only Pokemon
Well, now that you have it, you have a wide variety of games to play in the meanwhile at least
Fantasy Life, Shin Megami Tensei IV/IV final, Etrian Odyssey, both Devil Survivor games, Fire Emblem, Rune Factory, and so on. And those are just RPGs. If you haven't played a lot of DS games, there's a huge variety there too, as well as the numerous good Pokemon spin-offs like Pokemon Mystery Dungeon Sky and Pokemom Conquest.