A game room  is a place to let loose and have fun, so naturally you’ll want your game room decor to follow suit. While you can plug in a neon sign, hang a dartboard or two and add some wall art, sometimes it’s better to start out with a theme in mind. Chances are, if you have one of these rooms already, this will come easily to you — sports fans or beer drinkers might use these hobbies to guide their decor.