The USA DLC adds a dedicated American game mode with specialized assets: American Vehicles:
Train Fever is a popular train simulation game developed by Urban Games. The game you mentioned, Train.Fever.Incl.DLC.USA.-2.4.0.7--GOG , seems to be a specific version of the game that includes the DLC (Downloadable Content) for the USA, and it's version 2.4.0.7, distributed through GOG (formerly Good Old Games). Train.Fever.Incl.DLC.USA.-2.4.0.7--GOG
: The sense of progression from horse-drawn carriages to modern high-speed trains is visually and mechanically satisfying. The USA DLC adds a dedicated American game
, bundled with its significant and updated to a specific build version . Game Overview and it's version 2.4.0.7