Free Move Timed Move is a set of Ancients rules based on the Morschauser Roster System.
Rules: Ancients
Dirty Ancients Rules
Dirty Ancients is a set of simple ancients rules from Craig Cartmell
Century Ancients Rules
Century is a set of free wargames rules for playing ancients wargames set in the period 400BC to 150BC.
Against the Scourge of God – Battle of Chalons
Against the Scourge of God is a set of rules and a scenario for replaying the battle of Chalons. At Chalons, Romans under Aetius and Visigoths under Theoderic turned back an invasion of the Huns.
Champs de Bataille Ancients Rules
Champs de Bataille is a set of free wargames rules for ancients based on DBM. Each unit represents 125 to 250 cavalry or foot; more if a warband. The game is designed to be played on a hex board.
Link (direct download)