43		Trancelation (Windows, 2018)
40		Obliterator (DOS, 1989)
40		Fire and Ice (DOS, 1989)
40		Round 42 (DOS, 1986)
40		Kamikazi Alien (DOS, 1982)
40		Rocket Lander (DOS, 1982)
40		Omega War! (DOS, 1989)
40		Orion Odyssey: The Search for the Magic Ankh (DOS, 1991)
40		Cylindrix (DOS, 1996)
40		Cyril Cyberpunk (DOS, 1996)
40		Kurt's Spaced Invaders (DOS, 1995)
40		Invasion of the Mutant Space Bats of Doom (DOS, 1995)
40		Descension (Windows, 2011)
40		Alien Worlds (DOS, 1989)
40		Plasma Warrior (Windows, 2007)
40		Liberator (Windows, 2010)
40		Atomaders (Windows, 2002)
40		Cylindrix (Windows, 2001)
40		Great Glacier (Windows, 2004)
40		Missile Command (Windows, 1999)
40		TechnoSylph: vsys gaiden Special version (Windows, 2003)
40		Purge (Windows, 2003)
40		Lunar Jetman (Windows, 2003)
40		Exolon DX (Windows, 2005)
40		Star Command: Surface_Skimmer (Windows, 2007)
40		1Key Rocket Launcher (Windows, 2005)
40		Machine Hell (Windows, 2005)
40		Jetpak: Solar Crisis (Windows, 2004)
40		Space Junkie (Windows, 1997)

Notes: Games similar to Spingun, Games like Spingun, Fermenter Games LLC, Fermenter Games LLC, Windows, Action, Sci-Fi, Futuristic, Arcade, Shooter, PC, Game Similarities.