94		Atomine (Xbox One, 2018)
85		Demon's Crystals (Xbox One, 2017)
80		Biology Battle (Xbox 360, 2008)
80		All Zombies Must Die! (Xbox 360, 2011)
80		Zombie Apocalypse (Xbox 360, 2009)
65		Circuit Breakers (Xbox One, 2017)
65		Pix the Cat (Xbox One, 2017)
65		Pac-Man 256 (Xbox One, 2016)
64		Riddled Corpses EX (Xbox One, 2018)
64		Westerado: Double Barreled (Xbox One, 2016)
64		Shock Troopers (Xbox One, 2018)
63		LA Cops (Xbox One, 2015)
63		The Binding of Isaac: Rebirth (Xbox One, 2015)
60		Rocketmen: Axis of Evil (Xbox 360, 2008)
60		Unplugged (Xbox 360, 2010)
60		Tutankham (Xbox 360, 2010)
60		Madballs in Babo: Invasion (Xbox 360, 2009)
60		Desert Falcon (Xbox 360, 2010)
57		Enter the Gungeon (Xbox One, 2017)
55		Neighborhorde (Xbox One, 2017)
55		Tokyo 42 (Xbox One, 2017)
55		Zombie Party (Xbox One, 2017)
55		NeuroVoider (Xbox One, 2017)
54		Shock Troopers: 2nd Squad (Xbox One, 2018)
54		Big Crown: Showdown (Xbox One, 2018)
54		AIPD: Artificial Intelligence Police Department (Xbox One, 2016)
54		Ghostbusters (Xbox One, 2016)
53		At Sundown: Shots in the Dark (Xbox One, 2019)
53		We are Doomed (Xbox One, 2015)
52		Geometry Wars 3: Dimensions - Evolved (Xbox One, 2014)
52		Geometry Wars 3: Dimensions - Evolved (Xbox 360, 2014)
52		Halo: Spartan Assault (Xbox 360, 2014)
52		Renegade Ops (Xbox 360, 2011)
51		Halo: Spartan Assault (Xbox One, 2013)
51		Commando (Xbox 360, 2013)
50		Galax-E-Mail (Xbox 360, 2008)
50		Bomberman: Act:Zero (Xbox 360, 2006)
50		Paperboy (Xbox 360, 2007)
50		Stampede (Xbox 360, 2010)
50		Alien Breed: Evolution - Episode 1 (Xbox 360, 2009)
44		FullBlast (Xbox One, 2018)
41		Gatling Gears (Xbox 360, 2011)
40		Combat★Elite: WWII Paratroopers (Xbox, 2005)
40		Exisled (Xbox 360, 2008)

Notes: Games similar to 8DAYS, Games like 8DAYS, Santa Clara Games, BadLandGames S.L., Xbox One, Action, Arcade, Shooter, Bird's-eye view, 2D scrolling, Dual, Twin-stick shooter, Microsoft Xbox, Game Similarities.