OpenTTD - An open-source clone of the classic game ...
Transport Tycoon Deluxe - Transport Tycoon Deluxe is a Business Simulation developed by Chris Sawyer and published by MicroProse.
Game Dev Tycoon - Game Dev Tycoon is an addictive, Strategy, Business Simulation, and Single-player video game developed and published by Greenheart Games.
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.
RollerCoaster Tycoon Classic - Create and run amazing parks on your iPhone or Android.
Simutrans - Simutrans is an open-source transport simulator.