This is a trading card game, not to be confused with a playing card game. You don't 'actually' trade your cards, but it's the industry term for personalized decks of cards battling against one another using rules defined by the card's creators. In this case, it's straight forward- resources for the types of use cards, attacks deal damage to your opponent- whoever runs out of health wins first. And I won my first match on the first try! It was the seriously challenging level called "Tutorial".. Yeah, he'll really give you a run for your money! Afterwards though, it was all down hill!