Mount and Blade Warband
Mount & Blade: Warband Mod - Roman Invasion v1.3
The Romans have come seeking new lands, and have completely taken over the Swadians. And the Gauls, having lost all their lands to the Romans, came and took over the Nords.
Now the Rhodoks, Veagirs, Khergits and Sarranids realize that the Romans and Gauls pose a threat to their kingdoms. You arrive in Caladria, with a huge war going on.