OpenRCT2 - Game engine recreation of RollerCoaster Tycoon 2 adding new features.
Rail Nation - Become a logistics tycoon in this fascinating railroad strategy game.
Parkitect - Build the theme park of your dreams, and keep it running!
OpenTTD - An open-source clone of the classic game ...
Planet Coaster - Planet Coaster is an Adventure-based, Management, Strategy, Sandbox, Building, Single and Multiplayer Simulation by Frontier Developments.
My Fantastic Park - My Fantastic Park is an Addictive, Construction and Management, Browser-based and Business Simulation created and published by Upjers.