96		Outlast 2 (Windows, 2017)
50		Betrayer (Windows, 2013)
49		Erie (Windows, 2012)
47		Far Cry 3 (Windows, 2012)
47		Assassin's Creed Chronicles: India (Windows, 2016)
47		Assassin's Creed Chronicles: Russia (Windows, 2016)
45		Cry of Fear (Windows, 2013)
45		Sniper: Ghost Warrior 2 (Windows, 2013)
45		Sir, You Are Being Hunted (Windows, 2013)
45		Far Cry 4 (Windows, 2014)
45		Shambles (Windows, 2013)
44		Dishonored (Windows, 2012)
44		Daylight (Windows, 2014)
44		Monstrum (Windows, 2015)
44		Contagion (Windows, 2014)
44		CastleMiner Z (Windows, 2014)
43		Sniper: Ghost Warrior 3 (Windows, 2017)
43		Organ Quarter (Windows, 2017)
43		The Brookhaven Experiment (Windows, 2016)
43		A.V. (Windows, 2015)
43		InsanZ: The Cake is a Lie (Windows, 2015)
43		Fireflies (Windows, 2015)
42		The Bellows (Windows, 2016)
42		Bloody Good Time (Windows, 2010)
42		Armed Against the Undead (Windows, 2016)
42		Terror Lab (Windows, 2016)
42		Layers of Fear (Windows, 2016)
42		Shadows Peak (Windows, 2016)
42		Visitors (Windows, 2016)
42		Perished: The Zurkez Project (Windows, 2010)
41		Gevaudan (Windows, 2017)
41		Exon: The Impossible Challenge (Windows, 2017)
41		Dead Realm (Windows, 2017)
41		Hollow (Windows, 2017)
41		Nocturnal Hunt (Windows, 2017)
41		Visage (Windows, 2018)
41		Masked and Mysterious (Windows, 2017)
41		Mount Hill (Windows, 2017)
41		Undead Development (Windows, 2017)
41		Affliction (Windows, 2017)
41		Welcome to Hanwell (Windows, 2017)
41		Horror of the Deep (Windows, 2017)
41		Day of the Zombie (Windows, 2009)
41		Finding Bigfoot (Windows, 2017)
41		Dick Marcinko: Rogue Warrior (Windows, 2009)
41		Jonathan Kane: The Protector (Windows, 2009)
40		Desolate (Windows, 2018)
40		Witchkin (Windows, 2018)
40		Headache (Windows, 2018)
40		Shining Hotel: Lost in Nowhere (Windows, 2018)
40		Horror Legends (Windows, 2018)
40		Budget Cuts (Windows, 2018)
40		Fading Visage (Windows, 2018)
40		The Padre (Windows, 2018)
40		007: Quantum of Solace (Windows, 2008)
40		U.S. Most Wanted: Nowhere to Hide (Windows, 2002)
40		Terminal Terror (DOS, 1994)
40		Alcatraz: Prison Escape (Windows, 2001)
40		Dino Crisis 2 (Windows, 2003)
40		Specnaz: Project Wolf (Windows, 2006)
40		Cry of the Infected (Windows, 2008)
40		Prism: Guard Shield (Windows, 2006)
40		Brat 2: Obratno v Ameriku (Windows, 2000)
40		Černaja Metka (Windows, 2008)

Notes: Games similar to Outlast, Games like Outlast, Red Barrels Inc., Red Barrels Inc., Windows, Action, Stealth, Survival Horror, 1st-person, UnrealEngine3, Mental facility, Asylum, PC, Game Similarities.