You must own the Road to the Black Sea DLC. Other map DLCs (Going East, Scandinavia, France, Italia, Baltic) are also generally required for full compatibility.
Version 2.2 and above are compatible with ProMods. In later game versions (1.48+), much of this project's content was officially integrated into ProMods Europe.
Cinematic viewpoints added in Sebeș and Sibiu to showcase the scenery. Installation & Requirements