Eat! Breed! Kill! Like a primal force of nature, the savage alien race known as the Growlers smashes their way across the Maelstrom, voraciously eating all opposition. Practically unstoppable, the unique packmind telepathy and hyper-adaptive physiology of the Growlers allow them to conquer even the most extreme environments. There's only one defense against a Growler's ferocious, unpredictable attack-another Growler! The Growler Forcebook is the ultimate source of information on this mighty race, including details on the Growler life cycle, culture, breeds, colonies and their homeworld of Primordia. A complete Growler force list covers the four main breeds (Razorbacks, Bluefangs, Whitetusks, and Fireguts) and new abilities. This book includes a Primordia Battle Terrain Table, rules for mixed-breed and custom-breed forces, and Growler-specific campaign rules that show how to grow a Growler pup into a terrifying chieftain.