As time went on, the game's developer, Kuju Entertainment, began to release DLCs (downloadable content) for the game. These DLCs added new features, trains, and routes to the game, and Alex couldn't get enough of them. However, he soon realized that some of the DLCs were exclusive to certain versions of the game or required a special code to unlock.
: Start with the TS Academy to master electric, diesel, and steam traction; completing these often provides a sense of progression that "unlockers" skip entirely. train simulator classic dlc unlocker exclusive