99		Mega Man X (DOS, 1995)
99		Mega Man X7 (Windows, 2003)
99		Mega Man X8 (Windows, 2005)
99		Mega Man X4 (Windows, 1998)
99		Mega Man X5 (Windows, 2002)
99		Mega Man Legends (Windows, 2001)
81		Mega Man 11 (Windows, 2018)
80		Psycho Soldier (Windows, 2008)
80		Gleylancer (Windows, 2016)
80		20XX (Windows, 2014)
74		Darius Gaiden (Windows, 1999)
73		G Darius (Windows, 2000)
72		Acceleration of Suguri 2 (Windows, 2018)
71		Azure Striker Gunvolt (Windows, 2015)
70		Gunstar Heroes (Windows, 2011)
70		Rise & Shine (Windows, 2017)
70		VectorMan (Windows, 2010)
70		Side Arms Hyper Dyne (DOS, 1988)
70		Bullet Soul (Windows, 2017)
70		Street Fighter X Mega Man (Windows, 2012)
70		Assault Suit Leynos (Windows, 2016)
70		Mega Man 3: The Robots are Revolting (DOS, 1992)
62		Sonic Princess (Windows, 2001)
61		Good Robot (Windows, 2016)
60		Supercharged Robot Vulkaiser (Windows, 2007)
60		Bionic Commando (DOS, 1988)
60		Maidens of a Hollow Dream (Windows, 2018)
60		Mighty No. 9 (Windows, 2016)
60		Wibarm (DOS, 1989)
60		Forgotten Worlds (DOS, 1991)
55		Galactic Patrol (Windows, 1998)
54		Realm (DOS, 1997)
54		Dark Moon (DOS, 1999)
54		Lazarus (DOS, 1997)
54		Fire Zone (Windows, 1999)
54		Solaris 1.0.4. (Windows, 2000)
54		The Fourth Generation (DOS, 1997)
54		Starcom (DOS, 1997)
54		Isin-Densin Zero (Windows, 1999)
53		Hunter Hunted (Windows, 1996)
53		DoDonPachi Resurrection (Windows, 2016)
53		Hurrican (Windows, 2007)
53		Firewind (DOS, 1996)
53		Bit Blaster XL (Windows, 2016)
53		Starscape (Windows, 2008)
53		Idinaloq (Windows, 2000)
53		Gunner 3 (Windows, 2000)
53		Stillhunt (DOS, 1996)
53		Oni (Windows, 2001)
53		Hydorah (Windows, 2010)
53		Mushihimesama (Windows, 2015)
52		MURI (Windows, 2013)
52		Bot Vice (Windows, 2016)
52		The Day 5: Assault Dragon (DOS, 1995)
52		Meteor Mission (DOS, 1995)
52		Astebreed (Windows, 2013)
52		Intensity XS: ReCharge (Windows, 2001)
52		Revolver360 Re:Actor (Windows, 2014)
52		Super Cyborg (Windows, 2014)
52		VanSlug: X Mission (DOS, 1995)
52		Intensity XS (Windows, 2001)
52		SK-111 'Star Killer' (Windows, 1995)
52		GFID Advanced Place: Project φ (Windows, 2001)
52		MAZ! (Windows, 2017)
52		Super Hydorah (Windows, 2017)
52		Into the Sun: Projected Distruction (DOS, 1995)
52		UFO-Hunt 2001 (Windows, 2001)
52		Prototype (DOS, 1995)
51		Super Beemger (DOS, 1994)
51		The Orion Project (DOS, 1994)
51		Alien Tequila (Windows, 2002)
51		Entity (DOS, 1994)
51		Alien Stars (Windows, 2008)
51		IAS (DOS, 1994)
51		Xatax (DOS, 1994)
51		The Day 4: Icarus (DOS, 1994)
51		Syder Arcade (Windows, 2012)
51		Awesomenauts (Windows, 2012)
51		Magical Broom Extreme (Windows, 2002)
51		Tomak: Save the Earth, Again (Windows, 2002)
51		The Angry Video Game Nerd Adventures (Windows, 2013)
51		Illusion Blaze (DOS, 1994)
51		BII-NARY: The War Against Pop-Ups (Windows, 2002)
51		Entrance Gate (Windows, 2002)
51		Blood Money (DOS, 1990)
50		Duke Nukum: Episode 2 - Mission: Moonbase (DOS, 1991)
50		Duke Nukum: Episode 3 - Trapped in the Future (DOS, 1991)
50		Anyman (Windows, 2012)
50		Journey to Silius (Windows, 2017)
50		Toho Invaders (Windows, 2009)
50		Astro Tripper (Windows, 2009)
50		Dalek Attack (DOS, 1992)
50		Warside (Windows, 2015)
50		Space Vegetables (DOS, 1992)
50		Leave Home (Windows, 2010)
50		Pants no Arashi (Windows, 2011)
50		Yar's Revenge (Windows, 2011)
50		Duke Nukum: Episode 1 - Shrapnel City (DOS, 1991)
50		Duke Nukem (DOS, 1991)
50		Uriel's Chasm 2: Et (Windows, 2015)
50		DubWars (Windows, 2016)
50		Metroid Sigma (Windows, 2015)
50		The Cleaner (Windows, 2008)
50		Weapon of Choice (Windows, 2015)
50		World Quest (DOS, 1993)
50		Geu Nal-i Omyeon 3: Dragon Force (DOS, 1993)
50		Reflex Point (DOS, 1985)
50		Duke Nukem II (DOS, 1993)
50		Bullshot (Windows, 2016)
50		Menace (DOS, 1989)
50		Captain Power and the Soldiers of the Future (DOS, 1988)
50		Bob Morane: Science Fiction 1 (DOS, 1987)
50		Gongbat (Windows, 2015)
50		Jim Power: The Lost Dimension in 3D (DOS, 1993)
50		BiFrost (Windows, 2013)
50		Dark Matter (Windows, 2013)
50		Gaurodan (Windows, 2013)
50		Duke Nukem (Windows, 2013)
50		Duke Nukem II (Windows, 2013)
50		Caladrius Blaze (Windows, 2017)
50		C-RUSH (Windows, 2014)
50		Zappa Roidz (DOS, 1989)
50		Asteria (Windows, 2014)
50		Shuushuu Nito: Shoot Shoot Nitori (Windows, 2014)
50		Power-Up (Windows, 2014)
50		Hydorah (Windows, 2013)
50		Gentrieve (Windows, 2010)
50		Halo Zero (Windows, 2005)
50		Robocop 2D 2: Robocop vs Terminator (Windows, 2005)
50		Adagio (Windows, 2005)
50		Castle Shikigami 2 (Windows, 2005)
50		Fren-ze (Windows, 2006)
50		Cat Girl without Salad: Amuse-Bouche (Windows, 2018)
50		Uriel's Chasm (Windows, 2014)
50		GraviTron (Windows, 2006)
50		Castle of Shikigami III (Windows, 2006)
50		Inescapable (Windows, 2013)
50		Absolute Blue (Windows, 2005)
50		Alien Horde (Windows, 2003)
50		Nick Naster's eXtinction (Windows, 2003)
50		Major Havoc (Windows, 2010)
50		Killer Baby (Windows, 2006)
50		Solar 2 (Windows, 2011)
50		Steel Saviour (Windows, 2004)
50		Star Blaze (Windows, 2005)
50		WarMachine Overload (Windows, 2005)
50		Monadius (Windows, 2005)
50		Blessed (Windows, 2007)
50		Mogura Reverse (Windows, 2004)
50		IO (Windows, 2007)
50		Varia (Windows, 2007)
50		Zub (Windows, 2007)
50		Trouble Witches: Episode 1 - Daughters of Amalgam (Windows, 2007)
50		Heckpoint (Windows, 2017)
47		Shogo: Mobile Armor Division (Windows, 1998)
45		Mission Cobra 98 (DOS, 1998)
44		Nebula Fighter (DOS, 1997)
44		Zeroth Zone (DOS, 1999)
44		Helicops (Windows, 1997)
44		Blaster! (DOS, 1997)
44		Betamax (DOS, 1997)
44		Super Stupid Space Invaders (DOS, 1997)
44		U.R.B.A.N The Cyborg Project (DOS, 1999)
44		CHAMP Invaders (DOS, 1997)
44		CHAMP Galagon (DOS, 1997)
44		Mono Space (DOS, 1997)
44		Space Invaders (Windows, 1999)
44		Avenger (DOS, 1997)
44		LaserAge (Windows, 1999)
44		Orbsters (Windows, 1997)
44		TAGAP 2: The Apocalyptic Game About Penguins 2 (Windows, 2011)
44		Space Fortress (DOS, 1999)
44		Alien Invaders 2000 (Windows, 1999)
43		Jets 'n' Guns (Windows, 2004)
43		Alien Rampage (DOS, 1996)
43		KOPS (DOS, 1996)
43		Stargunner (DOS, 1996)
43		Iji (Windows, 2008)
43		Abductor (DOS, 1996)
43		DOOM 2D (DOS, 1996)
43		CHAMP Galaxia (DOS, 1996)
43		Iron Man / X-O Manowar in Heavy Metal (DOS, 1996)
43		Akane (Windows, 2018)
43		Gravity Force (Windows, 2000)
43		Just Shoot The Thing! (Windows, 2000)
43		Seihou 1: Shuusou Gyoku (Windows, 2000)
43		Invaders From Neptune! (Windows, 2000)
43		Out of This World (DOS, 1992)
43		Operation Spacehog (DOS, 2000)
43		SideLine (Windows, 1996)
43		Galagatron (Windows, 1996)
43		PixelShips (Windows, 2000)
43		Zak Zapper (Windows, 2000)
43		Abuse (DOS, 1995)
43		Interpose (DOS, 1996)
43		SideLine (DOS, 1996)
43		TIE Invaders (DOS, 1996)
43		3D Missile Madness (Windows, 2000)
43		Operation Spacehog (Windows, 2000)
43		S.T.O.R.M. (DOS, 1996)
43		Blue Revolver (Windows, 2016)
43		Mini Ghost (Windows, 2017)
43		TAGAP: The Apocalyptic Game About Penguins (Windows, 2007)
43		Gravity Force (DOS, 2000)

Notes: Games similar to Mega Man X3, Games like Mega Man X3, Capcom Co., Ltd., Capcom Entertainment, Inc., Windows, Action, Sci-Fi, Futuristic, Anime, Manga, Shooter, Side view, Robot, PC, Game Similarities.