The Elder Scrolls: Oblivion. This game really got me into RPG's, considering before that, the only RPG I played was Pokemon. The story, the intensity, the questing, it was in my eyes perfect. Thus I began to change from a strategy gamer that viewed RPG's as too complex tl;dr to one that can't imagine a life without an RPG game. So yeah, I'm a bit ashamed of myself though, that when I was a lot younger, I tought RPG's were boring.