Low-Tech (GURPS) (4e)
Low Tech: The basic tools used by historical adventurers from the Stone Age to the Age of Sail; and still used by modern survivalists and post-apocalypse survivors when the high-tech toys fail. Weapons and armor from antlers and rawhide to warhammers and heavy mail; adventure and travel gear from simple stone kives to early submarines; everyday items and tools of every trade. RPG.