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69		Perception (Windows, 2017)
68		PT for PC (Windows, 2018)
67		Imscared (Windows, 2016)
65		Ultimate Custom Night (Windows, 2018)
64		Stairs (Windows, 2015)
64		Boogeyman (Windows, 2015)
64		Apocalypse: The Game (Windows, 2017)
64		Narcosis (Windows, 2017)
64		Five Nights at Freddy's 4 (Windows, 2015)
64		Corridor 15 (Windows, 2017)
63		Haunted House: Cryptic Graves (Windows, 2014)
63		OK/Normal (Windows, 2018)
63		Passing Pineview Forest (Windows, 2014)
63		Case 2: Animatronics Survival (Windows, 2018)
63		The Occluder (Windows, 2018)
62		Amnesia: The Dark Descent (Windows, 2011)
62		Amnesia: A Machine for Pigs (Windows, 2013)
60		The Void (Windows, 2008)
56		Tattletail (Windows, 2016)
55		Shut Eye (Windows, 2016)
54		FOTD (Windows, 2017)
54		Last Answer (Windows, 2017)
54		Basement (Windows, 2017)
47		Five Nights at Freddy's: Sister Location (Windows, 2016)
43		Overcast: Walden and the Werewolf (Windows, 2014)
43		The Nightfall (Windows, 2018)

Notes: Games similar to Ad Exitum, Games like Ad Exitum, Since Idea Games, Since Idea Games, Windows, Adventure, Survival Horror, Horror, 1st-person, UnrealEngine4, PC, Game Similarities.