Heads up bored gamers at work! Facebook has added games to it's Messenger service! If you click on a friend right now, you'll find a small gaming controller icon you can click to challenge that friend to a game! Don't worry the friend doesn't have to be present to play you, it looks like you just compete for high scores! Games like Pac-Man, Galaga, Space Invaders and Words With Friends are all available to play! Check it out now!