Citadel Combat Cards is a fast-paced game for 2 players, in which you pit your fighters - each of which is represented by a card - against your opponent's fighters. Whoever wins the most battles wins the game! Each game lasts for 6 rounds, during each of which attacks are made - ranged, melee, and psychic.

Included are 60 cards, split into 2 decks - 30 for the Space Marines, and 30 for the sinister forces of Chaos - each of which fulfills a battlefield role (HQ, Troops, Elites, Fast Attack, and Heavy Support). Setting up your cards and deploying the right card at the right time is the key to victory - special bonuses are applied when the right cards are supporting each other!