99		Oolite (Windows, 2006)
99		Lightspeed (DOS, 1990)
80		Hyperspeed (DOS, 1991)
74		Wing Commander III: Heart of the Tiger (DOS, 1994)
70		Wing Commander III: Heart of the Tiger (Windows, 2011)
61		Evochron Mercenary (Windows, 2010)
60		Zombie Smashers X3: Ninjastarmageddon! (Windows, 2007)
54		Moon Tycoon (Windows, 2001)
50		Pro Gamer Manager 2 (Windows, 2017)
50		Startide (Windows, 2017)
50		E.S.S. (DOS, 1989)
42		Kerbal Space Program (Windows, 2011)
41		Gravity Well (DOS, 1996)
40		StarShip Constructor (Windows, 2017)

Notes: Games similar to X: Beyond the Frontier, Games like X: Beyond the Frontier, EGOSOFT GmbH, THQ Inc., Windows, Simulation, Sci-Fi, Futuristic, Managerial, Business Simulation, Shooter, 1st-person, 3rd-person, Other, Space Flight, Simulation - Space trading and combat, X: Beyond the Frontier, PC, Game Similarities.