Legendary: A Marvel Deck Building Game is set in the Marvel Comics universe. During the game, players will recruit hero cards to add to their deck in order to make it stronger. Players need to build their recruitment powers (to enlist more heroes) and their fighting ability (to combat the villains.) As players defeat villains, they collect those cards, which will be worth points at game's end. Players can also fight the mastermind; if a player has enough fighting power, he claims one of the attack cards beneath the mastermind, which has a particular effect on the game. If all of these cards are claimed, the game ends and players tally their points to see who wins. If the mastermind completes his scheme (having a certain number of villains escape, for example,) then the players all lose.