North and South is a fan supplement for Kings of War, Mantic Games’ free fantasy rules. The rules cover both regular American Civil War games and the ACW with Zombies.
Rules: American Civil War
Black Powder Skirmish Rules
Black Powder is a set of free wargames rules by Wes Rogers for skirmish warfare in the period 1600 – 1870.
American Civil War Riverine Actions
Mike Callan offers this set of free wargames rules for American Civil War Ironclads. The set originally was published in Wargames Illustrated 14.
Iron Brigade Civil War Rules
Iron Brigade is Mike Willegal’s third edition of his Civil War rules. It’s designed on a 1/20 scale.