99		Mobile Light Force (Windows, 2015)
99		Double Spoiler (Windows, 2010)
99		Dragon Spirit (DOS, 1991)
93		Deep Space Waifu: Fantasy (Windows, 2018)
90		Gun Wings (Windows, 2015)
84		Raptor: Call of the Shadows (DOS, 1994)
84		Fox Ranger II: Second Mission (DOS, 1993)
83		Mystical (DOS, 1990)
83		Dawn Raider (DOS, 1990)
83		Flying Tigers II (DOS, 1994)
83		Highway Fighter (DOS, 1994)
82		Sky Shark (DOS, 1989)
82		Trauma (DOS, 1995)
82		Future Dimensions (DOS, 1995)
82		Tyrian (DOS, 1995)
82		Gauntlet II (DOS, 1989)
81		Star Monkey (Windows, 2001)
81		Procyon (Windows, 2014)
80		DemonStar: Secret Missions 1 (Windows, 2002)
80		Genetos (Windows, 2009)
80		Sol Divide (Windows, 2015)
80		Irukandji (Windows, 2009)
80		DemonStar: Secret Missions 2 (Windows, 2003)
80		Varion (Windows, 2018)
80		Dark Corona Pegasus (Windows, 1997)
80		The Caravan: Truxtribute (Windows, 2016)
80		Drone (DOS, 1997)
80		Gun Viper (Windows, 2002)
80		Instant Dungeon! (Windows, 2014)
80		Dactylus (DOS, 1997)
80		Last Soldier (Windows, 2017)
80		DemonStar (Windows, 1998)
80		We are Doomed (Windows, 2015)
80		Fire Arrow (Windows, 2013)
80		Legacy of Lunatic Kingdom (Windows, 2014)
80		Sleep Tight (Windows, 2018)
80		Galactic Attack (Windows, 1997)
80		Wolflame (Windows, 2014)
80		SpiritSphere (Windows, 2017)
80		Tōhō: Imperishable Night (Windows, 2004)
80		Violet Detector (Windows, 2018)
80		Raiden II (Windows, 1997)
80		ArchMage (Windows, 2008)
80		BlastZone 2 (Windows, 2011)
80		Raptor: Call of the Shadows (Windows, 1997)
80		Cloud Master (Windows, 2018)
80		NoReload Heroes (Windows, 2018)
80		Mystical (Windows, 2018)
80		River Raid II (Windows, 2010)
80		eXceed: Gun Bullet Children (Windows, 2005)
80		Tormentor X Punisher (Windows, 2017)
80		Space Miner (DOS, 1983)
80		Astro Assembler (Windows, 2001)
80		1917: The Alien Invasion (Windows, 2016)
80		Kartoffelpüree: Der Gemüseshooter (Windows, 2001)
80		Deaths Maze (Windows, 2017)
80		At Sundown: Shots in the Dark (Windows, 2019)
80		Jet Buster (Windows, 2017)
80		1942 (Windows, 2001)
80		B.U.G.S. (Windows, 1998)
80		Magical Chase (Windows, 1998)
80		Wild Frontera (Windows, 2015)
80		Zenodyne R (Windows, 2016)
80		Mobile Light Force 2 (Windows, 2017)
80		Drone (Windows, 1999)
80		Hell Yeah!: Wrath of the Dead Rabbit (Windows, 2012)
73		Champions of Breakfast (Windows, 2016)
73		Blue Revolver (Windows, 2016)
72		Gundemonium Recollection (Windows, 2011)
72		Hillsfar (DOS, 1989)
72		Abaron (DOS, 1995)
72		Sora (Windows, 2016)
72		Jamestown: Legend of the Lost Colony (Windows, 2011)
71		Uridium (DOS, 1988)
70		Deep Space Waifu: Nekomimi (Windows, 2018)
70		Rival Megagun (Windows, 2018)
70		Star Drifter (Windows, 2016)
70		Steam and Metal (Windows, 2015)
70		Spacepowers (Windows, 2018)
70		Shikhondo: Soul Eater (Windows, 2017)
70		A City Sleeps (Windows, 2014)
70		Shooting Game (Kari) (Windows, 1997)
70		eXceed 3rd: Jade Penetrate Black Package (Windows, 2009)
70		Shmup Love Boom (Windows, 2015)
70		Concealed the Conclusion (Windows, 2006)
70		Aqua Kitty (Windows, 2014)
70		HellStar Squadron (Windows, 2018)
70		AppleSnake (Windows, 2017)
70		Aircraft War X (Windows, 2016)
70		MX 5000 (Windows, 2010)
70		Xiizeal (Windows, 2015)
70		Undefined Fantastic Object (Windows, 2009)
70		River Raid (Windows, 2010)
70		Seihou 1: Shuusou Gyoku (Windows, 2000)
70		Magical Broom (Windows, 2004)
70		Baroque Shooting (Windows, 2000)
70		Don'Yoku (Windows, 2015)
70		ShineG: In the Bullethell (Windows, 2017)
64		Bomber (DOS, 1993)
63		Deep Space Waifu (Windows, 2017)
61		Dragonia (Windows, 2017)
60		Wish Project (Windows, 2013)
60		TwinBee (Windows, 2010)
60		Deep Space Waifu: Flat Justice (Windows, 2017)
60		Garage (Windows, 2018)
55		Fengkuang Shuang Xiang Pao (DOS, 1992)
55		Big Bob's Drive-In (DOS, 1992)
55		Fox Ranger (DOS, 1992)
55		Rath-Tha (DOS, 1992)
55		Jetsons: The Computer Game (DOS, 1992)
55		Nicky Boom (DOS, 1992)
55		StarMines II: Planet of the Mines (DOS, 1992)
55		ElfLand (DOS, 1992)
55		Defender (DOS, 1992)
54		Santa's Xmas Caper (DOS, 1993)
54		The Dungeons of Grimlor (DOS, 1993)
54		Skull Quest I: The Cyan Sarcophagus (DOS, 1993)
54		Wrath of the Demon (DOS, 1991)
54		Battlestorm (DOS, 1991)
54		MegaDestroyer Frantis (DOS, 1991)
54		Skunny's Desert Raid (DOS, 1993)
54		Alien Breed (DOS, 1993)
54		Cave Story (Windows, 2005)
54		Fury of the Furries (DOS, 1993)
54		GoGo!! Uribyeol (DOS, 1993)
54		Back to the Future Part III (DOS, 1991)
54		Forgotten Worlds (DOS, 1991)
54		Silent Shadow (DOS, 1991)
54		Major Stryker (DOS, 1993)
53		Beyond the Abyss (DOS, 1994)
53		Akane (Windows, 2018)
53		Blackthorne (DOS, 1994)
53		Jackson City (DOS, 1990)
53		Rastan (DOS, 1990)
53		Squidlit (Windows, 2018)
53		La Espada Sagrada (DOS, 1990)
53		Tom and the Ghost (DOS, 1990)
53		Back to the Future Part II (DOS, 1990)
53		Dunjax (DOS, 1990)
53		Crack Down (DOS, 1990)
53		Squirm (Windows, 2018)
53		Flying Tigers (DOS, 1994)
53		Xargon: The Mystery of the Blue Builders - The Secret Chamber (DOS, 1994)
53		Xargon: The Mystery of the Blue Builders - Xargon's Fury (DOS, 1994)
53		Raiden (DOS, 1994)
53		Alien Breed: Tower Assault (DOS, 1994)
53		Xargon: The Mystery of the Blue Builders - Beyond Reality (DOS, 1994)
53		Lupinball (Windows, 2017)
53		Project-X (DOS, 1994)
53		Duet (Windows, 2015)
53		Skull Quest II: The Vortex (DOS, 1994)
53		Parsec Man 3D (DOS, 1994)
53		RS-2 (DOS, 1990)
53		Q-YO Blaster (Windows, 2018)
52		SAMOLIOTIK (Windows, 2016)
52		Revenge of Defender (DOS, 1989)
52		Starward Rogue (Windows, 2016)
52		Xenon (DOS, 1989)
52		Stargoose Warrior (DOS, 1989)
52		Star Breaker (DOS, 1989)
52		Danmaku Unlimited 2 (Windows, 2013)
52		Maldita Castilla EX: Cursed Castilla (Windows, 2016)
52		Cave Story+ (Windows, 2011)
52		MOT (DOS, 1989)
52		Moonwalker (DOS, 1989)
52		Enter the Gungeon (Windows, 2016)
52		Ikaruga (Windows, 2014)
52		Hellraider (DOS, 1989)
52		Sky & Rica (DOS, 1995)
52		Aquaria (Windows, 2007)
52		Karzeł (DOS, 1995)
52		Knightmare Tower (Windows, 2014)
52		Delvion Star Interceptor (DOS, 1995)
52		The Dungeons of Grimlor II (DOS, 1995)
51		Astro Avenger II (Windows, 2008)
51		Jr. Pac-Man (DOS, 1988)
51		No Thing (Windows, 2016)
51		Gauntlet (DOS, 1988)
51		Tower Fortress (Windows, 2017)
51		Feud (DOS, 1988)
51		Galak-Z: The Dimensional (Windows, 2015)
51		Straimium Immortaly (Windows, 2016)
51		Serious Sam's Bogus Detour (Windows, 2017)
51		Leap of Fate (Windows, 2016)
51		Knight Squad (Windows, 2015)
51		Alien Stars (Windows, 2008)
51		Xenon 2000: Project PCF (Windows, 2000)
51		GoNNER (Windows, 2016)
51		Mad Show (DOS, 1988)
51		Satazius (Windows, 2011)
51		Better Dead Than Alien! (DOS, 1988)
51		Particle Mace (Windows, 2015)
51		Rive (Windows, 2016)
51		Pac-Guy: Resurrection (Windows, 1996)
51		Mystik Belle (Windows, 2015)
51		Bard's Gold (Windows, 2015)
51		Katapult (DOS, 1996)
51		Square Heroes (Windows, 2015)
51		Ravage (DOS, 1996)
51		Steredenn (Windows, 2015)
51		Willow (DOS, 1988)
51		Stargunner (DOS, 1996)

Notes: Games similar to Knightmare, Games like Knightmare, DOS, Action, Fantasy, Arcade, Shooter, Top-down, 2D scrolling, Scrolling shoot 'em up, PC, Game Similarities.