Matt Fritz offers a set of free miniatures rules called Across the Alps. The rules are for recreating the Battle of Trebbia from 218 BC, when Hannibal crossed the Alps to face the Roman Army at the river Trebbia. The rules are easy to play, being designed for Matt’s students. There also is a link there to paper figures.
Valiant Britons is Jim Wallman’s contribution to wargaming ancient british tribes in the pre Roman era. Its designed for 15mm figures, but he says that any scale will do. Like all of Wallman’s rules sets, it’s well done and makes me want to start painting the period immediately.
I played Flint and Feather at a local con last fall and thought it was quite interesting. It’s a skirmish game about the “Heroic Age” of the Great Lakes First Nations. You can get the basic rules here.
The prolific Matt Fritz offers Fighting for The Pharaoh, a set of simple and free wargames rules for refighting the battle of Kadesh in miniature. The best part is that, in addition to the rules, Matt also offers paper figures in both color and black and white. LIke all of his games, this one is designed for Matt’s students.
Here’s a page with some errata and clarifications for Warhammer Ancients’ Alexander The Great book.