45		Omega War! (DOS, 1989)
45		Fire and Ice (DOS, 1989)
45		Obliterator (DOS, 1989)
44		The Game With No Name (DOS, 1990)
43		Orion Odyssey: The Search for the Magic Ankh (DOS, 1991)
43		Metal Mutant (DOS, 1991)
43		Monuments of Mars (DOS, 1991)
42		Round 42 (DOS, 1986)
41		Spingun (Windows, 2016)
40		Descension (Windows, 2011)
40		Kamikazi Alien (DOS, 1982)
40		Cylindrix (DOS, 1996)
40		Defy Gravity (Windows, 2011)
40		Invasion of the Mutant Space Bats of Doom (DOS, 1995)
40		Kurt's Spaced Invaders (DOS, 1995)
40		Cyril Cyberpunk (DOS, 1996)
40		Monuments of Mars (Windows, 2015)
40		Atomaders (Windows, 2002)
40		Purge (Windows, 2003)
40		Lunar Jetman (Windows, 2003)
40		Liberator (Windows, 2010)
40		Cylindrix (Windows, 2001)
40		TechnoSylph: vsys gaiden Special version (Windows, 2003)
40		Great Glacier (Windows, 2004)
40		Beep (Windows, 2011)
40		Jumper! (Windows, 2004)
40		Star Command: Surface_Skimmer (Windows, 2007)
40		Plasma Warrior (Windows, 2007)
40		Exolon DX (Windows, 2005)
40		Machine Hell (Windows, 2005)
40		Jetpak: Solar Crisis (Windows, 2004)
40		Jumper: Redux (Windows, 2005)
40		Space Junkie (Windows, 1997)

Notes: Games similar to Alien Worlds, Games like Alien Worlds, DOS, Action, Sci-Fi, Futuristic, Platform, Shooter, PC, Game Similarities.