Concentration Concentration is a social trivia game. Players each collect the same number of cards (which determines the number of game rounds. So if each player has 3 cards, it means that each player would play 3 rounds). On each turn, the active player reads the question on one of their cards. For instance: Names of living things that have more than 3 legs... Name of landlocked countries... Names of things in the kitchen... There are 200 cards. When the active player reads the question, they begin by mentioning an answer quickly and next player does the same and it keeps going clockwise until someone fails, forgets an answer during turn or repeats what has been answered before.