Transformers RPG Transformers ONE SourcebookDescriptionSpecificationsShipping The Transformers One Sourcebook brings your Transformers Roleplaying Game to Cybertron as the inciting moves of the Civil War occur! Join the ranks of bots fighting for a better future or take up the banner of the High Guard in their rebellion against Sentinel Prime with new factions representing the beginnings of the Autobots and Decepticons. Work alongside or battle against the films starring characters as you forge