Game collecting is taking off in a big way, and all sorts of classic games and related memorabilia can bring in big bucks. What’s your gaming treasure worth? Bring something you found in your parents’ attic or a rarity from your own collection, and you’ll have a chance to come up on stage and have your stuff evaluated, discussed and appraised (amateurishly, for fun!) by our panel of experts. Chris Kohler, an editor at WIRED and the author of RETRO magazine’s column on game collecting, moderates.