Gwent has two players simulating a war between two of four factions: Northern Realms, Scoia’Tael, Monsters, or Nilfgaardian Empire. Players take turns adding strength to the battlefield until both players pass. The highest strength on the battlefield wins the round and matches are played best of three, with little to no card drawing in between rounds. Special cards may also be played to reduce the effect of certain unit types. Gwent also features various once-per-game leader abilities and deck building rules.