Mine is Bioshock Infinite. Never been so immersed in a game. Felt like I was living it. There is a ton of actual story and a ton of voxophones (audio diaries) that expand it even more so. The characters are great too. Not to mention the two story based DLCs will blow your mind almost as much as the original story itself. In fact the second dlc wraps the entire bioshock series up which is quite rare of a thing for a DLC to do. Highly recommend buying it cuz it is so cheap now. Or at least watch a full YouTube play through from someone like theradbrad