An RPG is a game where the player takes control of a character or a team of characters. I know this is incredibly broad and could be applied to most video games. For video games you also have one or more of the following: A leveling system where your characters gain experience through fighting monsters and/or completing quests. • A skill tree. • Gives the player some degree of control over the story. • Can be either Single-Player or Multi-Player. • Active or Turn-based combat.