4. Watchmen
Barring the unavailability of Runaways or their Marvel background, the next base place to drop in a superhero choice game would be the universe of The Watchmen. The Walking Dead charges you with the safety of a small group of survivors, and The Wolf Among Us places you as the sheriff of an entire slum. Well, imagine the weight that'll be on your shoulders if the entire world is at stake. These are Mass Effect-level threats. There's any number of directions this could go, from playing as Rorschach on his question to discover the Comedian's killer, to playing as a formerly unknown character running concurrently to the comic book, to maybe even one of the survivors of Watchmen's climax as they deal with the fallout of Ozymandias' plan. It's another great world in which to set the player loose.