Theme Hospital - Business simulation game created in 1997.
OpenTTD - An open-source clone of the classic game ...
My Fantastic Park - My Fantastic Park is an Addictive, Construction and Management, Browser-based and Business Simulation created and published by Upjers.
Simutrans - Simutrans is an open-source transport simulator.
RollerCoaster Tycoon Classic - Create and run amazing parks on your iPhone or Android.
Transport Tycoon Deluxe - Transport Tycoon Deluxe is a Business Simulation developed by Chris Sawyer and published by MicroProse.