61		Arizona Sunshine (Windows, 2016)
58		Metro 2033: Redux (Windows, 2014)
58		SnipZ (Windows, 2017)
57		Welcome to Basingstoke (Windows, 2018)
55		Survarium (Windows, 2015)
55		Metro: Last Light (Windows, 2013)
54		Far Cry 3: Blood Dragon (Windows, 2013)
54		Crysis 2 (Windows, 2011)
54		Crysis 3 (Windows, 2013)
54		Lonely Land (Windows, 2016)
54		ZomDay (Windows, 2017)
54		Unturned (Windows, 2017)
54		Skynet Rising (Windows, 2016)
54		S.T.A.L.K.E.R.: Lost Alpha (Windows, 2014)
54		The Fifth Day (Windows, 2014)
54		Half-Life 2 (Windows, 2004)
53		DayZ (Windows, 2013)
53		Way of Hero (Windows, 2017)
53		Archangel (Windows, 2017)
53		Arktika.1 (Windows, 2017)
53		Hello Neighbor (Windows, 2017)
53		7 Days to Die (Windows, 2013)
53		Dead Inside (Windows, 2017)
53		Dead Purge: Outbreak (Windows, 2017)
53		Codename Cure (Windows, 2017)
53		Half-Life 2: Episode Two (Windows, 2007)
52		Hitman 2: Silent Assassin (Windows, 2002)
52		Hitman: Blood Money (Windows, 2006)
52		Overkill's The Walking Dead (Windows, 2018)
52		S.T.A.L.K.E.R.: Call of Pripyat (Windows, 2009)
52		Hello Neighbor: Hide and Seek (Windows, 2018)
52		Infestation: Survivor Stories (Windows, 2012)
52		Diary of Defender (Windows, 2018)
52		Half-Life 2: Episode One (Windows, 2006)
52		Ravaged (Windows, 2012)
52		Band of Defenders (Windows, 2018)
52		I Am Alive (Windows, 2012)
52		S.T.A.L.K.E.R.: Shadow of Chernobyl (Windows, 2007)
51		The Terminator: Future Shock (DOS, 1995)
51		Project Eden (Windows, 2001)
51		Half-Life 2: Deathmatch (Windows, 2004)
51		Metro 2033 (Windows, 2010)
51		Homefront (Windows, 2011)
50		Codename: Tenka (Windows, 1998)
50		The Terminator: Rampage (DOS, 1993)
50		You Are Empty (Windows, 2007)
50		Terminator 3: War of the Machines (Windows, 2003)
50		S.T.A.L.K.E.R.: Clear Sky - Prologue (Windows, 2008)
50		The Terminator 2029 (DOS, 1992)
50		Strife (DOS, 1996)
50		Machine Head (DOS, 1996)
47		Evolve (Windows, 2015)
45		Tom Clancy's Splinter Cell: Blacklist (Windows, 2013)
45		Killing Floor 2 (Windows, 2015)
45		Destiny 2 (Windows, 2017)
44		Firefall (Windows, 2014)
44		Dead by Daylight (Windows, 2016)
44		Depth (Windows, 2014)
43		Left 4 Dead 2 (Windows, 2009)
43		Left 4 Dead (Windows, 2008)
42		Soviet Lunapark VR (Windows, 2018)
40		Surface Tension (DOS, 1996)
40		Surface Tension (Windows, 1996)

Notes: Games similar to The Flock, Games like The Flock, Vogelsap, Vogelsap, Windows, Action, Post-Apocalyptic, Hunting, Shooter, Survival Horror, Thriller, 1st-person, Unity, PC, Game Similarities.