Folklore?! If you like KH2 you'll like that game as well, battle wise, plus the game has amazing visuals, great atmosphere and soundtrack and an amazing story.
I also advice Eternal Sonata and Valkyria Chronicles. Disgaea 3 is full strategy probably not your thing if you're more into the action based RPG's. More a game for the die hard fans as visuals can really be a punch to your face.
And indeed Oblivion as WRPG, lots, lots and lots of side quests plus full action. Many will most likely advice Fallout 3 but I'm not fan of it. I'm no fan of post apocalypse style.
PLAYSTATION®3 is the future.....NOW.......B_E_L_I_E_V_E
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