X-Plane - The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.
Dream Car Builder - Dream Car Builder is a Racing, Driving, Single-player, and Multiplayer video game published and developed by RoKo.
FlightGear - The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It also simulates space flight in Earth's orbit. It's flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark.
Rover Builder - Rover Builder developed and published by Hatfuls Games is a Building, Strategy, and Single-player Simulation.
Tom Clancy’s H.A.W.X 2 - Tom Clancy’s H.
Far: Lone Sails - Far: Lone Sails developed by Okomotive and published by Mixtivision is an Atmospheric, Adventure, and Single-player video game.