Armies in Warmachine™ consist of three main types. Warcasters lead the army and use powerful magic. Warjacks add the heavy punch to an army. Troops are the majority of an army and fight in groups. A careful selection of all three is needed to build a force that is more dangerous than the individual elements.

The miniatures game of Warmachine developed out of a role playing game using the Iron Knigdoms as its background. The miniatures game is placed in the western continent of Immoren, on a planet known to its inhabitants as Caen. This western area, known as the Iron Kingdoms, is divided into four main human kingdoms.

Warmachine™ is set in the Iron Kingdoms. It combines some aspects of traditional fantasy with steam-power and gunpowder. Across the realm, ancient rivalries explode amongst the various nations into a wide spread conflict.

Warmachine™ is set in the Iron Kingdoms. There are four main factions in the kingdoms: Cygnar, Khador, the Protectorate of Menoth and Cryx. Each has its own special abilities and different style of army. The kingdoms can hire special mercenaries to add a missing link to their forces, in the hope of beating their enemies.