I just stumbled across these.
3 has been out since 2006 and only became avail on steam a couple of weeks ago.
4 is in beta for a coule more days and not yet avail on steam.
Reviews are very positive. Main weakness is that graphics are not that good.
If you can live with that though, and I Can. They appear awesome in scope.
I tried to get the download beta of 4 and couldn't. So I got the clunkeire three version
600 page manual - 600 spells 26 civs - 1500 units , tac battles create your own etc etc etc
3 has hot seat play.
I have NO idea what I am am doing but having quite a bit of fun just generating opening games.
I Guess thius is the fantasy verswion of gal civ, to pay a compliment
Note if you like building types ala MOM this may not impress