Shadowrun, Final Fantasy series (early) , Shining Force series (nod to the Sega age), also, Earthbound. Gotta get my classics in there. Modern: Legend of Dragoon, ES series, Lost Odyssey, Mass Effect series, Red Dead Redemption (it has a skill system, so it's an RPG, not to mention the protagonist is superb). Greatest of all time in my mind, though: the Suikoden series. Not only did these games throw you into a world basically unprepared, but the plot revealed reasons your character changed. That's important in story-telling.
I am a huge fan of Dishonored. Not as open world as Skyrim, but still an awesome storyline, and you can use sword, crossbow, pistol, and supernatural powers.
Also I might add that you can play multiple ways. It's an assassin's game but you can go through the game without killing a single soul. It has a high/low chaos system that affects the ending of the game. The higher the chaos, the more gruesome/sad ending, the lower the chaos, the more respected you are and better results in general.
My son has Dark Souls too. Though I love the setting I hate the game's unforgiveness compares to it's difficulty and steep learning curve . Have reached the dog boss and that forest with those living trees and stone knights. I stopped playing because I became a bad example for both my sons .
I don't know what you're talking about. link
Planescape Torment for the options and playstyle
Vampire Masquerade Bloodlines for the unique setting
I really like Black Isle and Troika in general.