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.
OpenRCT2 - Game engine recreation of RollerCoaster Tycoon 2 adding new features.
Simutrans - Simutrans is an open-source transport simulator.
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.