But all in all, it's just a small mod that creates the Kingdom of Bosnia, seperated from Croatia, Hungary, Serbia and The Byzantine Empire. This mod was originally made in Crusader Kings 2 - Collection but I think it should work on the standard version of the game.
Kingdom of Bosnia appears year 1322 but it is fully expanded year 1327. So start a new game at year 1327 for maximum experience.
***Unzip the file and place the 3 folders inside your Crusader Kingdoms 2 directory and overwrite all.Example: program(x86)/Paradox Interactive/Crusader Kings 2/
Have fun!
//MennanoBIH