Dungeons & Dragons

The art of the Dungeon Master is as much about the soft skills you employ to build a story and create engaging interactions for your players as it is about any specific roll-playing system.  As Dungeon Master, your primary roll in the game is to facilitate the game and its story. This is not to say that you are solely responsible for creating the entirety of the world, though you will be populating a great deal of the game world with characters, plots, and locations. However, keep in mind that as active participants in the game world, your players can be an invaluable resource in fleshing out the world as they come up with back-stories and character interactions that affect the flow of world events. If you can imagine it, you can play it. The most important aspect is keeping your players engaged, because it's just as much about them as anything else.