In the context of Microsoft Train Simulator (MSTS) , the "5 of 6" designation typically refers to a specific volume within a larger, multi-part collection of community-created or third-party add-ons.
Most large add-on collections require all six default routes to be installed initially to function correctly, as they "borrow" textures and shapes from them. If you are using modern alternatives like Open Rails MSTS - Addon - Routes and Trains -5 of 6-
The MSTS community has developed thousands of routes, ranging from high-speed European lines to detailed freight subdivisions in the US. Train Simulator Content - Microsoft Q&A In the context of Microsoft Train Simulator (MSTS)
This fifth installment of the Microsoft Train Simulator (MSTS) addon series focuses on the vast world of routes and trains, highlighting how they transform the simulator into a global railroading experience. Train Simulator Content - Microsoft Q&A This fifth
Finding "MSTS - Addon - Routes and Trains -5 of 6-" means you likely have a multi-part RAR or ZIP file from an old CD or forum backup. Here is how to install it without crashing your simulator.
For steam lovers, the DHR project is a masterpiece of narrow-gauge (2 ft) madness. Set in the foothills of the Himalayas, this route is not for heavy haulers but for the "Toy Train."