50		Cobra (DOS, 1987)
48		Magus in Mystic Geometries (Windows, 2008)
47		DynaMarisa 3D (Windows, 2011)
46		Space Marisar (Windows, 2012)
45		Exelinya Burst! (Windows, 2009)
45		eXceed 3rd: Jade Penetrate Black Package (Windows, 2009)
45		Touhou Koumakyou: The Embodiment of Scarlet Devil 8 bit (Windows, 2013)
44		Subterranean Animism (Windows, 2008)
44		Great Fairy Wars (Windows, 2010)
44		Suguri (Windows, 2010)
43		Mountain of Faith (Windows, 2007)
43		Ten Desires (Windows, 2011)
42		Flying Red Barrel ~Diary of a Little Aviator~ (Windows, 2012)
41		Deathsmiles (Windows, 2016)
41		Shoot the Bullet (Windows, 2005)
41		Phantasmagoria of Flower View (Windows, 2005)
40		Meat Puppet (Windows, 1997)
40		Twinkle Star Sprites (Windows, 2016)
40		The Embodiment of Scarlet Devil (Windows, 2002)
40		The 3D Adventures of Sailor Moon (Windows, 1997)
40		The Legend of Dark Witch (Windows, 2015)
40		QP Shooting: Dangerous!! (Windows, 2014)

Notes: Games similar to Touhou Defense Force, Games like Touhou Defense Force, Hachimitsu Kumasan, Shindenken, Windows, Action, Anime, Manga, Shooter, Isometric, Female, PC, Game Similarities.