Most unlockers for Steam games work by modifying or tricking the Steam API to believe you own specific pieces of content.
Using these tools is considered piracy and carries several dangers: free to play :: Crusader Kings II General Discussions crusader kings 2 all dlc unlocker
Users often have to manually download the actual DLC content files—which are not always included in the base free-to-play download—and place them in the game's root folder. Most unlockers for Steam games work by modifying