Open Rails - Open Rails is an open source simulator that is designed to run Microsoft Train Simulator content.
Transport Fever - Transport Fever is an Adventure-based, Management, Strategy, Economy, Sandbox, City-Building and Single-player video game developed by Urban Games and published by Gambitious Digital Entertainment.
openBVE - openBVE is an open source train simulator
Simutrans - Simutrans is an open-source transport simulator.
Microsoft Train Simulator - Microsoft Train Simulator was a commercial train simulator for Microsoft Windows.
OpenTTD - An open-source clone of the classic game ...