Ironclad Tactics is a strategy-based video game created by independent developer Zachtronics. The game takes place in an alternate history at the onset of the American Civil War where robot-like "ironclad" machines are used alongside human troops by both sides in the war. The game incorporates elements of collectible card games, whereby the player constructs a deck of cards earned from previous matches for the deployment, outfitting, and tactics of human and ironclad troops to achieve specific victory conditions. The game features single player and co-operative multiplayer campaign modes as well as skirmishes between two players. The game was released for Microsoft Windows, OS X, and Linux-based computers in September 2013, and later for Android devices and the PlayStation 4.