Transport Tycoon Deluxe - Transport Tycoon Deluxe is a Business Simulation developed by Chris Sawyer and published by MicroProse.
OpenTTD - An open-source clone of the classic game ...
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.
TheoTown - A City simulation game with great nostalgic graphics.
Train Valley - Drive forward the industrial revolution in a train tycoon game!
Simutrans - Simutrans is an open-source transport simulator.