I'll agree wholeheartedly with those who have recommended Rome: Total War. 'Authenticity Fascists' will definitely want to download the '
'Rome Total Realism'' mod, unless they like playing with wardog, flaming pig and screeching women fantasy units. The 'Europa Barbarorum' mod is still in development and looks like it will be a good alternative to RTR when it is finally released.
[EDIT - Obviously I haven't been paying close enough attention - a rather extensive 'Beta Version' of 'Europa Barbarorum'
has been released. It can be downloaded from the very handsome
Europa Barbarorum website, along with previews of all the factions, a clickable campaign map and some preview pictures in the gallery. As a 'Beta' release, apparently it still has some bugs, but if the pictures are anything to go by, it makes 'Total Realism' look rather shabby by comparison. Any mod with tribe and personal names in Proto-Germanic gets my vote.
I just downloaded the mod and will fire it up this evening.]
Lately I've been playing the 'Barbarian Invasion' expansion pack. I just finished my first campaign, where I tried playing the Eastern Empire. That faction is classed as 'Moderately Hard', but proved too hard for me - I hit 476 AD last night and only just failed to achieve my objective of holding 20 provinces including Constantinople, Carthage and Rome. My outer provinces kept rebelling on me and some had to be reconquered every three turns or so. I reconquered and massacred the populations of two of my eastern provinces about 10 times (maybe that's why they hated me). In the end I was beaten by the Lombards, who came from nowhere to take Pannonia, Thrace and all my Greek provinces in the last 30 years of the game.
So far there are no decent realism mods for BI, so I have to put up with the current fluorescent-coloured skins and really silly looking units. The
'Imperia Romana' mod is shaping up to be the most realistic mod for BI, but it's not due for its first release for some months. They are still recruiting for researchers, artists and 3D skinners, so any of our Late Roman experts would be welcome to offer them some assistance.
I've just started a new campaign as the Franks, which has been fun so far, despite having silly units like 'Paladins' and 'Graal Knights'.
'Medieval Total War II' has recently been announced for release later this year. From the looks of it, I'll need to get a new PC to play it.