Post a game that you find/consider to be a work of art

Dark Souls is the last video game series that has pretty much achieved to reel me in into its' excellent grim, dark world. Which is a miracle for me because I'm not really much of an open-minded gamer for several years now. Anyways, for most people that played this game, they enjoy the vague lore and such - which is nice, of course. However, for me it's the design of the creatures and characters (and music) that I enjoy the most.