65		Realm (DOS, 1997)
65		Lazarus (DOS, 1997)
65		Starcom (DOS, 1997)
64		Freddy (Windows, 1998)
64		Galactic Patrol (Windows, 1998)
64		Firewind (DOS, 1996)
64		Cyber Police (DOS, 1996)
64		Xenophage: Alien BloodSport (DOS, 1996)
64		Hunter Hunted (Windows, 1996)
64		Stillhunt (DOS, 1996)
63		Meteor Mission (DOS, 1995)
63		The Day 5: Assault Dragon (DOS, 1995)
63		Isin-Densin Zero (Windows, 1999)
63		Primal Rage (DOS, 1995)
63		Dark Moon (DOS, 1999)
63		VanSlug: X Mission (DOS, 1995)
63		Into the Sun: Projected Distruction (DOS, 1995)
63		Hydorah (Windows, 2010)
63		Bit Blaster XL (Windows, 2016)
63		SK-111 'Star Killer' (Windows, 1995)
63		Solaris 1.0.4. (Windows, 2000)
63		Fire Zone (Windows, 1999)
63		Prototype (DOS, 1995)
63		Hurrican (Windows, 2007)
62		Xatax (DOS, 1994)
62		Gunner 3 (Windows, 2000)
62		Entity (DOS, 1994)
62		IAS (DOS, 1994)
62		MURI (Windows, 2013)
62		The Orion Project (DOS, 1994)
62		MAZ! (Windows, 2017)
62		Super Cyborg (Windows, 2014)
62		Super Beemger (DOS, 1994)
62		Super Hydorah (Windows, 2017)
62		Illusion Blaze (DOS, 1994)
62		The Day 4: Icarus (DOS, 1994)
62		Hurdles (DOS, 1994)
62		Revolver360 Re:Actor (Windows, 2014)
62		Shatter (Windows, 2010)
61		Duke Nukem II (DOS, 1993)
61		Syder Arcade (Windows, 2012)
61		World Quest (DOS, 1993)
61		Jim Power: The Lost Dimension in 3D (DOS, 1993)
61		Intensity XS: ReCharge (Windows, 2001)
61		Alien Stars (Windows, 2008)
61		UFO-Hunt 2001 (Windows, 2001)
61		Awesomenauts (Windows, 2012)
61		Blood Money (DOS, 1990)
61		Geu Nal-i Omyeon 3: Dragon Force (DOS, 1993)
61		Intensity XS (Windows, 2001)
61		The Angry Video Game Nerd Adventures (Windows, 2013)
61		GFID Advanced Place: Project φ (Windows, 2001)
60		Adagio (Windows, 2005)
60		Blessed (Windows, 2007)
60		C-RUSH (Windows, 2014)
60		Uriel's Chasm (Windows, 2014)
60		Power-Up (Windows, 2014)
60		Halo Zero (Windows, 2005)
60		Fren-ze (Windows, 2006)
60		GraviTron (Windows, 2006)
60		Robocop 2D 2: Robocop vs Terminator (Windows, 2005)
60		Duke Nukum: Episode 3 - Trapped in the Future (DOS, 1991)
60		VectorMan (Windows, 2010)
60		Metroid Sigma (Windows, 2015)
60		Reflex Point (DOS, 1985)
60		Bob Morane: Science Fiction 1 (DOS, 1987)
60		Side Arms Hyper Dyne (DOS, 1988)
60		Captain Power and the Soldiers of the Future (DOS, 1988)
60		Warside (Windows, 2015)
60		Xenophage: Alien BloodSport (Windows, 2015)
60		Asteria (Windows, 2014)
60		Leave Home (Windows, 2010)
60		Gongbat (Windows, 2015)
60		Astro Tripper (Windows, 2009)
60		Glum Buster (Windows, 2009)
60		Weapon of Choice (Windows, 2015)
60		Bullshot (Windows, 2016)
60		Zappa Roidz (DOS, 1989)
60		Space Vegetables (DOS, 1992)
60		Duke Nukum: Episode 1 - Shrapnel City (DOS, 1991)
60		Varia (Windows, 2007)
60		Dalek Attack (DOS, 1992)
60		IO (Windows, 2007)
60		DubWars (Windows, 2016)
60		Duke Nukum: Episode 2 - Mission: Moonbase (DOS, 1991)
60		Gentrieve (Windows, 2010)
60		Thrustburst (Windows, 2008)
60		Menace (DOS, 1989)
60		The Cleaner (Windows, 2008)
60		Heckpoint (Windows, 2017)
60		Duke Nukem (DOS, 1991)
60		Zub (Windows, 2007)
60		BiFrost (Windows, 2013)
60		Alien Tequila (Windows, 2002)
60		BII-NARY: The War Against Pop-Ups (Windows, 2002)
60		Duke Nukem II (Windows, 2013)
60		Zheros (Windows, 2016)
60		Nick Naster's eXtinction (Windows, 2003)
60		Anyman (Windows, 2012)
60		Journey to Silius (Windows, 2017)
60		Armed and Gelatinous (Windows, 2016)
60		Killer Baby (Windows, 2006)
60		Uriel's Chasm 2: Et (Windows, 2015)
60		Hydorah (Windows, 2013)
60		Inescapable (Windows, 2013)
60		Entrance Gate (Windows, 2002)
60		Street Fighter X Mega Man (Windows, 2012)
60		Duke Nukem (Windows, 2013)
60		Major Havoc (Windows, 2010)
60		Alien Horde (Windows, 2003)
60		Dark Matter (Windows, 2013)
60		WarMachine Overload (Windows, 2005)
60		Star Blaze (Windows, 2005)
60		Shudder (Windows, 2018)
60		Absolute Blue (Windows, 2005)
60		Steel Saviour (Windows, 2004)
60		Monadius (Windows, 2005)
60		Gaurodan (Windows, 2013)
60		Solar 2 (Windows, 2011)
55		Betamax (DOS, 1997)
55		Nebula Fighter (DOS, 1997)
55		Super Stupid Space Invaders (DOS, 1997)
55		Fox Ranger 3: Last Revelation (DOS, 1997)
55		CHAMP Invaders (DOS, 1997)
55		CHAMP Galagon (DOS, 1997)
55		Mono Space (DOS, 1997)
55		Mars Taxi (Windows, 1997)
55		Avenger (DOS, 1997)
55		Orbsters (Windows, 1997)
55		Blaster! (DOS, 1997)
54		Mega Man X4 (Windows, 1998)
54		SideLine (Windows, 1996)
54		Mega Man X3 (Windows, 1998)
54		Galagatron (Windows, 1996)
54		Bio Freaks (Windows, 1998)
54		Alien Rampage (DOS, 1996)
54		SideLine (DOS, 1996)
54		Stargunner (DOS, 1996)
54		DOOM 2D (DOS, 1996)
54		S.T.O.R.M. (DOS, 1996)
54		Abuse (DOS, 1995)
54		Interpose (DOS, 1996)
54		Aro (DOS, 1996)
54		Flynn Sprint (DOS, 1996)
54		Iron Man / X-O Manowar in Heavy Metal (DOS, 1996)
54		Mission Cobra 98 (DOS, 1998)
54		KOPS (DOS, 1996)
54		CHAMP Galaxia (DOS, 1996)
54		Abductor (DOS, 1996)
54		TAGAP 2: The Apocalyptic Game About Penguins 2 (Windows, 2011)
54		TIE Invaders (DOS, 1996)
53		Akane (Windows, 2018)
53		Delvion Star Interceptor (DOS, 1995)
53		Zeroth Zone (DOS, 1999)
53		Alien Invaders 2000 (Windows, 1999)
53		Violent Vengeance: The Universe Hero (DOS, 1995)
53		Jets 'n' Guns (Windows, 2004)
53		Space Invaders (DOS, 1995)
53		Space Invaders (Windows, 1999)
53		U.R.B.A.N The Cyborg Project (DOS, 1999)
53		Invaders 95 (Windows, 1995)
53		LaserAge (Windows, 1999)
53		Mini Ghost (Windows, 2017)
53		Space Fortress (DOS, 1999)
53		N++ (Windows, 2016)
53		Indecent (DOS, 1995)
53		Out of This World (DOS, 1992)
53		Iji (Windows, 2008)
53		Fighter (Windows, 1995)
53		Arctic Moves (DOS, 1995)
53		TAGAP: The Apocalyptic Game About Penguins (Windows, 2007)
53		Turrican II: The Final Fight (DOS, 1995)
52		Abduction Bit (Windows, 2016)
52		Juanito Arcade Mayhem (Windows, 2017)
52		Combatrobo Zakato (DOS, 1994)
52		Gravity Force (DOS, 2000)
52		Evasive Maneuvers (DOS, 1994)
52		Super Mutant Alien Assault (Windows, 2016)
52		Project-X (DOS, 1994)
52		Polandball: Can Into Space! (Windows, 2016)
52		Ricochet (Windows, 2001)
52		Just Shoot The Thing! (Windows, 2000)
52		Operation Spacehog (DOS, 2000)
52		Bionic Commando: Rearmed (Windows, 2008)
52		Operation Spacehog (Windows, 2000)
52		Invaders From Neptune! (Windows, 2000)
52		PixelShips (Windows, 2000)
52		Pink Hour (Windows, 2014)
52		3D Missile Madness (Windows, 2000)
52		Zak Zapper (Windows, 2000)
52		Gravity Force (Windows, 2000)
52		Kero Blaster (Windows, 2014)
51		Alien Attack (DOS, 1993)
51		Electroman (DOS, 1993)
51		Pink Heaven (Windows, 2015)
51		Space Chase III: Showdown In Orbit (DOS, 1993)
51		Hornado (Windows, 2001)
51		Procyon (Windows, 2014)
51		Gateworld: The Home Planet (DOS, 1993)
51		Jets 'n' Guns Gold (Windows, 2007)
51		The Interceptor (DOS, 1993)
51		Fox Ranger II: Second Mission (DOS, 1993)
51		Space Chase Part One: City Under Siege (DOS, 1993)
51		Good Robot (Windows, 2016)
51		Axiom Verge (Windows, 2015)
51		Graviton II (DOS, 1993)
51		Space Intruders (DOS, 1993)
51		Gravitar (DOS, 1993)
51		Rocket Fighter (DOS, 1993)
51		Skunny: Lost in Space (DOS, 1993)
51		Frantis: Mission II (DOS, 1993)
51		SDI2040 (DOS, 1993)
51		KOPS (Windows, 2001)
51		3D Mars Mission (Windows, 2001)
51		Amaranthine (Windows, 2016)
51		CounterAttack (Windows, 2016)
51		Ghost 1.0 (Windows, 2016)
51		Capsized (Windows, 2011)
51		Intrusion 2 (Windows, 2012)
51		Insanely Twisted Shadow Planet (Windows, 2012)
51		Steredenn (Windows, 2015)

Notes: Games similar to The Fourth Generation, Games like The Fourth Generation, D'India Software, Webfoot Technologies, Inc., DOS, Action, Sci-Fi, Futuristic, Arcade, Shooter, Side view, PC, Game Similarities.