BattleTech: A Time of War CompanionA Time of War Companion—just released in print but also available in PDF—is a core rule expansion book for the BattleTech RPG. At over 250 pages, this volume contains advanced rules for personal and mech combat, templates and a life events generator for character creation, ranks and traits for different clan affiliations, and new equipment catalogs, along with equipment modification rules. For the GM, there are systems and advice for creature design, world building, and campaign development.