When the Warmaster turned against the Emperor of Mankind, dragging the Imperium into civil war, the Titan Legions were also divided. Across the galaxy, Titan Legion turned upon Titan Legion, and worlds quaked beneath their tread.
The galaxy is at war. On a countless worlds, the Emperor's loyal armies fight to defend His realm from those who would tear it asunder. Among the greatest of the Imperium's defenders are the loyalist Titan Legions.
Warhammer Underworlds meets fast-paced multiplayer combat in Arena Mortis – an expansion that transforms the ultimate competitive miniatures game into a furious free-for-all! Choose your favourite champion and pit them against 2-5 others for a fresh and fun challenge.