Most Undervalued game for Playstaion

[Robojack]

I have to strongly disagree. Legend of Dragoon was nowhere was good as FF Tactics, IMO. But in regards to your original question, I'd have to go with Valkyrie Profile, which did fantastically in Japan, but never really got the deserved attention in North America. Combined with half-screen watercolored character portraits, a musical score by Motoi Sakuraba, and a Norse mythology setting, it doesn't get much better than this. Plus, the voice dubbing wasn't so bad either!