Simutrans - Simutrans is an open-source transport simulator.
OpenTTD - An open-source clone of the classic game ...
Mashinky - A great railroad tycoon game in active development.
Transport Tycoon Deluxe - Transport Tycoon Deluxe is a Business Simulation developed by Chris Sawyer and published by MicroProse.
Railroad Tycoon - Railroad Tycoon is a very first installment in the series of Railroad Tycoon that was released in 1990 developed by MPS Labs 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.