This addictive, easy-to-learn card game is free to play and features art directly from Marvel comic books. Players build a deck of cards inspired by Marvel characters and compete in one-on-one matches online. New hero cards with different abilities are unlocked as you play and rewards will let you upgrade the art for cards in your collection.
While there are some microtransactions to customize how your cards look, there aren't any "pay-to-win" mechanics that let you spend money to get stronger cards, which keeps things fair for new players.