Matt Fritz offers a simple set of rules for recreating the 450 BC naval battle of Salamis between the Greeks and the Persians. The site even has links to paper models that you can use to play the game.
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.
I just found a new blog written by a guy chronicling his efforts to build a 10mm Warmaster Dacian army.
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.
The Ancient Battles site offers a nice article on building a Warhammer Ancient Battles mercenary hoplite unit for a Persian army (for use with the Alexander The Great supplement). The author uses a variety of painting techniques, and there are some nice photos.