Duel is a combat game played with a standard deck of 52-cards including jokers, inspired by the game Magic: The Gathering. The goal of the game is to reduce the opponents life to zero. Two players duel against each other using spells drawn from a common library. Face cards (including aces) are creatures, while number cards may be played as lands or spells. Lands are used to pay the cost of summoning creatures and casting spells. Creatures may attack opposing creatures or the opposing player, which is the primary method of reducing life.