DUEL BOY is a trading card game with unique 7-card packs. The game was first distributed at the 2022 Fall Tokyo Game Market. The packs included 7 cards for playing the game, one divider card, and a sticker the owner could wear to help find opponents to play the game. The game was designed to be played while standing (for instance in line to buy a game) and does not require a table. After a match, the players also swap 2 cards, with each player leaving with 5 cards they entered the game with and 2 of their opponent's cards. After an initial shuffle of cards, a player has one chance to reshuffle, but otherwise must play their hand as it has been drawn. A game is made up of several rounds and the winner will be the first player to win three hands or cause their opponent to not be able to play a card on their first turn of a hand. Players can only play cards from the right most end of their hand and must pay the cost of cards with the cards from the left end of their hand. Once per hand, a player can put the cards from their discard pile on the bottom of the deck - in the exact order they were discarded.