Steve Burt offers a set of free wargames for Ancients Warfare.
Rules: Ancients
Ancients Rules
David Wareham offers a set of free wargames rules for Ancients battles. They use an alternate movement system and whole figure casualty removal.
Minimal Melee Combat
Minimal Melee Combat is a set of free wargames rules designed to depict combat between sword armed adversaries.
Gangs of Rome Rules
Gangs of Rome is a new miniatures game of street fighting in Ancient Rome (yes, it was a thing). It’s actually a game I have thought about for years, going back to several books I read describing Roman politics as a blood sport. The rules are free for now, and there are dedicated miniatures and other things you can buy. Check out their Facebook page.
Legio Quaternarius Ancients Rules
Legio Quaternarius is a set of free wargames rules for ancients. It is played on a square gridded table.