We'll be updating this page as soon as we finalize the Rules document, but I wanted to give you guys a barebones summary of how the game works.
The basis of the game revolves around many players using one deck, taking turns drawing cards, playing weapons, and attacking the other players.
When you attack a player, you discard a card. The value of the card, plus any bonuses you have, is your attack. Your opponent then discards any number of cards, adding their values to match or beat your attack. If they don't, they take damage equal to the difference in your attack and his or her defense.
Tactics, Gifts, and Weapons can change how you attack or defend, but those are details for a little later.