99		Space War (Windows, 2010)
99		Spacewar (DOS, 1985)
99		Rocket Rangers (DOS, 1990)
99		Computer Space Simulator (Windows, 2005)
85		Starduel (DOS, 1991)
80		In Space We Brawl (Windows, 2015)
80		Astro Duel (Windows, 2016)
80		AstroRaid (Windows, 2003)
80		Meteor Crash (Windows, 2003)
80		Asteroids Deluxe (Windows, 2010)
80		Megamania (Windows, 2010)
80		Asteroids (Windows, 2010)
80		Super Stardust (DOS, 1996)
80		Star Trek: The Neutral Zone (Windows, 2003)
76		Bomberman (DOS, 1992)
75		ANIMAC (DOS, 1991)
74		Crazy Nick's Software Picks: Roger Wilco's Spaced Out Game Pack (DOS, 1992)
74		OverKill (DOS, 1992)
74		Turn n' Burn (DOS, 1992)
74		Jetsons: The Computer Game (DOS, 1992)
74		Xenon 2: Megablast (DOS, 1990)
73		Meteors (DOS, 1989)
73		Spheroids (DOS, 1993)
72		Arkanoid (DOS, 1988)
72		RefleX (Windows, 2014)
72		Uridium (DOS, 1988)
72		Beat Da Beat (Windows, 2016)
72		Ricochet: Lost Worlds (Windows, 2004)
71		Robotron: 2084 (DOS, 1995)
71		Abaron (DOS, 1995)
71		Stardust (DOS, 1995)
71		Worm Burner (DOS, 1987)
70		Defenders of Ekron (Windows, 2017)
70		Space Duel (Windows, 2010)
70		Space Shooter: Alpha Impact (Windows, 2003)
70		Star Project (Windows, 2016)
70		Gyruss (Windows, 2010)
70		Slybots: Frantic Zone (Windows, 2016)
70		Star Drifter (Windows, 2016)
70		Foxeroids (Windows, 2003)
70		Blasten ! (DOS, 1986)
70		Spaceship Trucker (Windows, 2017)
70		Space Asteroid Shooter (Windows, 2017)
70		Son of Scoregasm (Windows, 2017)
70		Xenoraid (Windows, 2016)
70		Starblast (Windows, 2017)
70		Dreamstars (Windows, 2001)
70		Gravitar (Windows, 2010)
70		Space Hawk (Windows, 2010)
70		Tommy's Hyperdrive (DOS, 1986)
70		Warning Forever (Windows, 2003)
70		Invasion (Windows, 2015)
70		Zenodyne (Windows, 2014)
70		Super Rock Blasters (Windows, 2017)
70		Supreme Earth Champion (Windows, 2005)
70		Universe in Fire (Windows, 2017)
70		DarkSide (Windows, 2007)
70		Spacepowers (Windows, 2018)
70		Space Ripper (Windows, 2017)
70		Totally Tiny Arcade (Windows, 2007)
70		Hardnoid (Windows, 2017)
70		Red Death (Windows, 2017)
70		CHAMP Asterocks (DOS, 1997)
70		Quadnet (DOS, 1998)
70		One Star (Windows, 2017)
70		Blastocyst (DOS, 2005)
70		Back to Earth 2 (Windows, 2007)
70		Alien Sky (Windows, 2004)
70		Back to Earth (Windows, 2004)
70		Galaga (Windows, 2004)
70		Star Trek: D-A-C (Windows, 2009)
70		Fractal Fighter (Windows, 2007)
70		Titan Attacks! (Windows, 2006)
70		Astroship Evader (Windows, 1999)
70		Attack-Attack (Windows, 2003)
70		Geo Shooters (Windows, 1999)
70		Asteroids Fighter (Windows, 2003)
70		Trash Killer (Windows, 1999)
70		HellStar Squadron (Windows, 2018)
70		S.T.R.E.T.C.H. (Windows, 2018)
70		Asteroid Miner (Windows, 2003)
70		Vectoroids (Windows, 2002)
70		3D Astro Blaster (Windows, 1999)
70		Swarm (Windows, 1998)
70		FreeStrike (Windows, 2001)
70		Tron Light Cycles (DOS, 1983)
70		Ultimate Steroids (Windows, 2001)
70		Debris (Windows, 1999)
70		Juggernaut Corps: First Assault (Windows, 1998)
70		Alien Field 3671 (Windows, 2018)
70		Alien Onslaught (Windows, 2002)
70		DriftZone (Windows, 2000)
70		Double Stretch (Windows, 2018)
70		Terroid (DOS, 1996)
70		Atomic Bomberman (Windows, 1997)
70		Terroid (Windows, 1997)
62		Beat Hazard 2 (Windows, 2018)
62		Space Adventure (DOS, 1988)
61		Dragonia (Windows, 2017)
60		Xaklogian (Windows, 2015)
60		Space Scumbags (Windows, 2017)
60		Starship Troopers: Battlespace (Windows, 1998)
60		Space Codex (Windows, 2016)
60		Overdriven Reloaded (Windows, 2016)
60		Asteroids (Windows, 1998)
50		Go Mission: Space Travel (Windows, 2016)
47		Out of This World (DOS, 1992)
45		MegaDestroyer Frantis (DOS, 1991)
45		Slordax: The Unknown Enemy (DOS, 1991)
45		X-Fire (DOS, 1991)
44		Xerix (DOS, 1992)
44		Kingdom of Kroz II (DOS, 1990)
44		Galactic Battle (DOS, 1990)
44		Return to Kroz (DOS, 1990)
44		Bandits! (DOS, 1992)
44		Giant Space Slug (DOS, 1990)
44		StarBlade (DOS, 1990)
44		Jackson City (DOS, 1990)
44		Plexu: The Time Travellers (DOS, 1990)
44		Dunjax (DOS, 1990)
44		Space Miner (DOS, 1990)
44		1993 (DOS, 1992)
44		Quasar (DOS, 1990)
44		Heavy Water Jogger (DOS, 1992)
44		Starfire (DOS, 1992)
44		Fast Food (DOS, 1992)
44		Roboto (DOS, 1992)
44		Rath-Tha (DOS, 1992)
44		Kiloblaster (DOS, 1992)
44		Destruction Zone (DOS, 1992)
44		Toad Road (DOS, 1990)
44		StarMines II: Planet of the Mines (DOS, 1992)
44		Graviton (DOS, 1992)
44		Patriot Command (DOS, 1992)
43		Electroman (DOS, 1993)
43		Alien Attack (DOS, 1993)
43		Hellraider (DOS, 1989)
43		N++ (Windows, 2016)
43		Gravitar (DOS, 1993)
43		ROX (DOS, 1993)
43		Major Stryker (DOS, 1993)
43		Jim Power: The Lost Dimension in 3D (DOS, 1993)
43		Mirage Thunder (DOS, 1993)
43		Fox Ranger II: Second Mission (DOS, 1993)
43		Champ Centipede (DOS, 1993)
43		One Must Fall 2097 (DOS, 1994)
43		Xenon (DOS, 1989)
43		Inferno (DOS, 1994)
43		Wurm (DOS, 1993)
43		The Interceptor (DOS, 1993)
43		NetWars (DOS, 1993)
43		Kwik Snax (DOS, 1993)
43		PLEBS (DOS, 1989)
43		SDI2040 (DOS, 1993)
43		Space Intruders (DOS, 1993)
43		Earth Invasion (DOS, 1993)
43		Solar Winds: Galaxy (DOS, 1993)
43		Starsiege: Tribes (Windows, 1998)
43		Graviton II (DOS, 1993)
43		Solar Winds: The Escape (DOS, 1993)
43		Fluf! (DOS, 1989)
43		Gravity Force (DOS, 1989)
43		Space Snake (DOS, 1989)
43		Lupinball (Windows, 2017)
43		Dungeons of Kroz (DOS, 1989)
43		Microsoft Mouse (included game) (DOS, 1989)
43		Clone Invader (DOS, 1989)
43		Star Wars (DOS, 1989)
43		Alien Breed (DOS, 1993)
43		Cogmind (Windows, 2017)
43		Stargoose Warrior (DOS, 1989)
43		Lunar Take (DOS, 1989)
43		Cosmic Sheriff (DOS, 1989)
43		Alien Syndrome (DOS, 1989)
43		If It Moves, Shoot It! (DOS, 1989)
43		Zappa Roidz (DOS, 1989)
43		Tintin on the Moon (DOS, 1989)
43		Moonwalker (DOS, 1989)
43		Ajax (DOS, 1989)
43		Blasteroids (DOS, 1989)
43		Orbt XL (Windows, 2017)
43		Escape from Monster-Castle (DOS, 1993)
42		Abduction Bit (Windows, 2016)
42		Traffic Department 2192 (DOS, 1994)
42		Alien Breed: Tower Assault (DOS, 1994)
42		Teleglitch (Windows, 2012)
42		Kiloblaster 1 (DOS, 1994)
42		Galaga 94 (DOS, 1994)
42		Kiloblaster 3 (DOS, 1994)
42		Ricochet Infinity (Windows, 2007)
42		Wing Commander Saga: The Darkest Dawn (Windows, 2012)
42		The Orion Project (DOS, 1994)
42		Flying Tigers II (DOS, 1994)
42		Tubular Worlds (DOS, 1994)
42		Assault Android Cactus (Windows, 2015)
42		Mad Mix Game (DOS, 1988)
42		Void Invaders (Windows, 2015)
42		Memory Hog Hunter (DOS, 1988)
42		Better Dead Than Alien! (DOS, 1988)
42		Snakes (DOS, 1988)
42		Star Dust (DOS, 1988)
42		Starward Rogue (Windows, 2016)
42		Super Mutant Alien Assault (Windows, 2016)
42		Space Spirals (DOS, 1988)
42		Geometry Wars 3: Dimensions - Evolved (Windows, 2014)
42		Kiloblaster 2 (DOS, 1994)
42		Ikaruga (Windows, 2014)
42		Skyfox II: The Cygnus Conflict (DOS, 1988)
42		Everyday Shooter (Windows, 2008)
42		Stardust Galaxy Warriors: Stellar Climax (Windows, 2015)
42		Bedlam (DOS, 1988)
42		Mad Show (DOS, 1988)
42		Time Bandit (DOS, 1988)
42		Jamestown: Legend of the Lost Colony (Windows, 2011)
42		Speed Zone (DOS, 1988)
42		Total Carnage (DOS, 1994)
42		Alien Swarm: Reactive Drop (Windows, 2017)
42		Tunnel Divers (Windows, 2017)
42		Waves (Windows, 2011)
42		Mr. Smoozles Goes Nutso (Windows, 2006)
42		Star Wars: The Battle of Endor (Windows, 2003)
42		Star Hammer (DOS, 1994)
42		Crimsonland (Windows, 2003)
42		Parsec Man 3D (DOS, 1994)
42		AstroFire (DOS, 1994)
42		Highway Fighter (DOS, 1994)
42		Mutant Storm (Windows, 2003)

Notes: Games similar to HarshGame, Games like HarshGame, DOS, Action, Sci-Fi, Futuristic, Arcade, Shooter, Top-down, Space Flight, Fixed, Flip-screen, PC, Game Similarities.