Metro 2033 + Last light
Far Cry 1 , 2 and 3 (3 has one of the best villains ever)
Dead space 1,2 and 3
Batman Arkham city and Asylum
Borderlands 1 and 2
Every Ender Scrolls game
Thinking is the Enemy of Creativity. It's Self-Conscious, & Anything Self-Conscious is Lousy.
To The Moon
Mass Effect Series (Idk if Mass Effect 1 is on PC).
Amnesia: The Dark Descent
Dead Island (has an okay story, depends with which character).
Saints Row Series