So I'll just give you a link to his Ancients Support Site . Suffice it to say that I really like the game - or games, depending on what edition you have. I have the early 3W version, which means they're in two boxes, Ancients I and Ancients II - that's all explained in the link above. Even more amazing is the fact that they're from 3W, a company known for producing, on the whole, dreck.
Ancients includes many unit types common to armies all over the world before the high middle ages.
The rules for these units are very simple yet workable. The game also includes many small maps with varying terrain. So if a good low complexity wargame with lots of scenarios interests you, check out the link above. It may be a decent game for two players, however. Definitely some cool elements there.