70		Shuttle: The Space Flight Simulator (DOS, 1992)
70		Space Shuttle Mission 2007 (Windows, 2007)
43		Chuck Yeager's Advanced Flight Trainer 2.0 (DOS, 1989)
42		Stunt Island (DOS, 1992)
40		Stunt Island (Windows, 2016)
40		Giant Machines 2017 (Windows, 2016)
40		Rogue System (Windows, 2016)
40		X-Plane Version 7 (Windows, 2003)
40		X-Plane 8 (Windows, 2004)
40		X-Plane 8: Deluxe (Windows, 2006)
40		X-Plane 6 (Windows, 2001)

Notes: Games similar to Orbiter, Games like Orbiter, Spectrum Holobyte, Inc., Spectrum Holobyte, Inc., DOS, Simulation, Science, Vehicle Simulator, 1st-person, Space Flight, PC, Game Similarities.