How do you get falxmen in Rome Total War? I have checked the building plans and I can't find them. I understand that you need to be Germania. Is it just a rare unit you can recruit like druids?
It is possible to play as any faction by changing the
descr_stat.txt file. However, this is not an official mod, so do this at your own risk.
This website will be helpful (if you're not confident in changing game files I wouldn't do it).
This will tell you how to change all the factions in the game into playable (all but rebels, as rebels = slave), even the main Roman Senate faction. Playing as Rebels/slaves or Roman Senate is buggy so not recommended for regular play.
descr_strat.txtfile can be found in the
data\world\maps\campaign\imperial_campaignfolder[...] [the below] section determines which factions are playable[...] To change this, simply cut and paste them into another section.
The section of
descr_strat.txt you're looking for looks like this:
playable romans_julii romans_brutii romans_scipii end unlockable egypt seleucid carthage parthia gauls germans britons greek_cities end nonplayable romans_senate macedon pontus armenia dacia numidia scythia spain thrace slave end
Bonus tip: You can look in the building browser of cities you do not control to see the units/buildings for that faction.