You can purchase the modern version, Train Simulator Classic , which includes updated graphics and routes.
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) Railworks 3 Train Simulator 2012 Free Download
Check your Steam Library for "Train Simulator Classic." Any previous purchase of RailWorks 3: Train Simulator 2012 grants you access to the current core engine. You can purchase the modern version, Train Simulator
You can still find DVD-ROM copies of the original RailWorks 3 on secondary markets like eBay. You can still find DVD-ROM copies of the
Be cautious of third-party sites offering "free full game downloads," as these are often illegal and may contain malware .
1024 MB DirectX 9.0c compatible (GeForce GTX 560 Ti or better)
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