60		Aces High: The True Air Duel Simulator (DOS, 1996)
60		Microsoft Revenge of Arcade (Windows, 1998)
54		Ajax (DOS, 1989)
53		Xerix (DOS, 1992)
51		Frequent Flyer (Windows, 2017)
51		AngerForce: Reloaded (Windows, 2017)
51		Planes, Bullets and Vodka (Windows, 2016)
51		Incoming: The Final Conflict (Windows, 1998)
50		Sky Force: Reloaded (Windows, 2017)
50		Aircraft War X (Windows, 2016)
50		ROM CHECK FAIL (Windows, 2008)
50		Star Defender III (Windows, 2006)
50		Star Defender (Windows, 2002)
50		Combat (Windows, 2010)
50		MX 5000 (Windows, 2010)
50		Planum (Windows, 2018)
50		Finalizer: Super Transformation (Windows, 2010)
50		Redisruption (Windows, 2004)
50		River Raid (Windows, 2010)
42		Jamestown: Legend of the Lost Colony (Windows, 2011)
42		RefleX (Windows, 2014)
42		Beat Da Beat (Windows, 2016)
42		Bomber (DOS, 1993)
40		Touhou Tenkuushou: Hidden Star in Four Seasons (Windows, 2017)
40		Spaceship Trucker (Windows, 2017)
40		Defenders of Ekron (Windows, 2017)
40		Space Scumbags (Windows, 2017)
40		Assault Wing: Galactic Battlefront (Windows, 2011)
40		Xiizeal (Windows, 2015)
40		Steam and Metal (Windows, 2015)
40		Monkeys Odyssey (Windows, 2003)
40		In Space We Brawl (Windows, 2015)
40		Deltazeal (Windows, 2015)
40		Dogos (Windows, 2016)
40		BattleStorm (Windows, 2016)
40		Abaron (DOS, 1995)

Notes: Games similar to Operation Harrier, Games like Operation Harrier, Creative Materials, U.S. Gold Ltd., DOS, Action, Shooter, Top-down, Flight, Aviation, PC, Game Similarities.