: Using their own Prism3D engine allows SCS to update technology at no licensing cost and customize it specifically for large-scale trucking simulations.
You cannot simply drag-and-drop ETS2 map files into Unreal Engine. The map format ( .mbd ) is proprietary. Furthermore, SCS Software's rigging system for trucks (the way the chassis bends relative to the cabin) is unique. Converting the entire game would require re-building the entire European continent from scratch—a task that took SCS over a decade. euro truck simulator 2 unreal engine