While the base game is paid, there are extensive freeware packs for locomotives, routes, and scenarios available through community sites like UKTrainSim. Original Minimum System Requirements (2012 Version)
You can purchase the modern version, Train Simulator Classic , which includes updated graphics and routes. Railworks 3 Train Simulator 2012 Free Download
For those using older hardware or original discs, these were the recommended specs: Windows 7 / Vista / XP Processor: 3.0 GHz Quad Core or equivalent Memory: 4 GB RAM While the base game is paid, there are
You can still find DVD-ROM copies of the original RailWorks 3 on secondary markets like eBay. While the base game is paid
1024 MB DirectX 9.0c compatible (GeForce GTX 560 Ti or better)