Dorian Gray I didn't discover until a few years ago. I blazed through it how much I liked it. The transformations of Dorian's soul on a canvas is fantastic stuff.

Imagine if someone made a video game based on this idea. You put your soul on a canvas and throughout the game your choices reflect the good or bad endings you get from your actions. Add some horror elements to it. Maybe throw in some other people who made similar deals as Dorian. Maybe a boss fight with yourself since you are battling your conscience and desires. Just a thought.