Crypto-Magic: The Gathering I was recently introduced to the card game Magic: The Gathering. Today over lunch, I realized that this game could be transformed into an ideal networked crypto-game. Why ideal? Magic is a really popular game right now and a network version would require a lot of the crypto technology discussed on this list. So, it's ideal for the purpose of getting crypto into popular use. Brief description of game: Magic is entirely based on cards. There's no dice or board or game pieces. Each card represents a creature, an artifact, a magical ability, or something else (like land). Some cards a common, some uncommon, some very rare. Players each have their own deck of cards which they assemble from a larger collection of cards before the start of the game. They take turns drawing cards from their deck, revealing some (invoking their power), keeping others in their "hand" until later. A player wins when they kill their opponent's "army" (or render it leader-less). Where's the crypto? In my mind, the cards must be handled kind of like digital money. You have to have a way of authenticating cards (can't have players forging new creatures) and you have to have a way of preventing players from duplicating powerful, rare cards. These constraints imply there is some bank-like agency that creates and signs "official" game cards. They could sell them for real digital cash, or Tacky Tokens, or whatever. The "bank", or another third-party service, might have to participate in the play of a game to enforce the constraints. It's not really like digital money, of course, but it would require protocols at least as sophisticated. I haven't thought about this beyond what I've just described, but it seems like a promising idea. Somebody could probably make money at it, if they wanted to. Too bad I'm to busy. Jim_Miller@suite.com