Arisia has table top gaming, LARPing, large games, and open games. We have a 24 hour gaming room, where you can almost always find pick-up games. We also have dozens of scheduled games running in the gaming room and around the con.
If you are interested in being a game room moderator, write firstname.lastname@example.org. Moderators keep things running smoothly in the game room, setting up the space for scheduled games, and making sure things stay orderly. Plus, you can play games while doing it! Time as a moderator counts as volunteer time.