A diagram showing the typical progression of an RPG adventure for each system. Call of Cthulhu (any edition): I'd better investigate. Hmm, I don't like this. Wibble, squish. Dungeons & Dragons (4e): I'm tough. I'm weak. I'm tough. I'm weak. I'm tough. I'm weak. Vampire, World of Darkness: Angst. Power struggle. Angst. Mwahaha, my plans will surely work. More angst. Power struggle. Angst. Superheroes: I'm invincible! Oh, Crap! I'm invincible! Doctor Who: Travelling through time and space. Unearthing unlikely problems. Throwing together unlikely solutions. Surprise! Pathfinder: Sensible decisions, caution. Less sensible decisions, less caution. Charge!! I regret nothing! Loot. Middle Earth, The One Ring: Important travelling quest. Situation worsens. Enemies gather. Things look bleak. All is lost! Phew. That was close. (Link)