Dark Souls
Amazingly compelling adventure/action game. Still great fun, even with the sequels around.
Dragon's Crown
If you like old school brawlers like Golden Axe, this is a true treat to play.
Valkyria Chronicles
With occasionally hammy melodrama, it's completely unique and fun strategy game.
Way of the Samurai 3
If you've ever seen the movie Yojimbo (or A Fistful of Dollars, for that matter), this is essentially the video game series of that. You're a nameless samurai whose actions can greatly affect the outcome of a town over the course several days. Do you join a faction, do you help people in need, or do you become a psychotic killer? It's got bad reviews from people who seem to think it's supposed to be a Grand Theft Auto clone, but that's missing the idea entirely.