A card game based on the vintage Crystal Dynamics fantasy computer game of the same name. The game is played with two custom decks, a Recruit Deck and a Horde Deck. The Horde Deck is composed of Hordlings, the creatures that make up the Horde. The Recruit Deck includes forces which the player will use to combat the Hordlings.

The takes on the role of Chauncey, who must hold off the Horde for five years, battling the Hordlings in a predetermined series of locations, including the Shimto Plains, Fetid Swamps of Buuzal, Tree Realm of Alburga, Kar-Nyar Desert, and Frozen Wastes of Vesh.

"Victory: You (Chauncey) are killed if all 4 Grimthwacker cards are in the Recruit Discard Pile. You lose if you are ever unable to play your taxes. You win if you survive all 5 years (=20 turns)."