Version 18 has a timeline of important events. The focus is on 1629 to 1648, with a little more on either side to add context. This version also has 6 new feats: 2 (Magic Crafter and Occult Novice) replicate features from backgrounds or classes while 4 (Commander, Quartermaster, Sawbones and Sergeant Major) are for characters who get involved in wars and mass combat. Finally, there's a section on Player Projects which gives suggestions on what tools are appropriate for crafting magic items.