87		Cosmos Quest II: To Find a Sun (Windows, 2008)
86		Camp 1 (Windows, 2015)
80		Forever Space (Windows, 2017)
70		11-11-11 (Windows, 2011)
70		The Experiment Part 2: Menacing Darkness (Windows, 2011)
69		The Devil's Shroud: Part IV (Windows, 2010)
69		Black Sect Remake (Windows, 2012)
67		Mudlarks (Windows, 2014)
66		Darkforce: Peace Among Nations (Windows, 2015)
65		The Devil's Shroud: Part I (Windows, 2004)
65		Archeos (Windows, 2017)
65		The Robolovers (Windows, 2017)
65		The Devil's Shroud: Part II (Windows, 2005)
65		The Devil's Shroud: Part III (Windows, 2006)
65		Blue Madonna (Windows, 2011)
65		Flashbax (Windows, 2003)
64		Amber's Blood (Windows, 2012)
63		Under a Killing Moon (Windows, 2009)
63		Cold Case Summer (Windows, 2013)
63		Black Circle (Windows, 2009)
62		The Colour of Murder (Windows, 2008)
62		Under a Killing Moon (DOS, 1994)
62		Bosch's Damnation (Windows, 2014)
61		Shades of Black (Windows, 2015)
61		Contradiction: Spot the Liar! (Windows, 2015)
61		East Side Story (Windows, 2007)
60		The Birdwatcher (Windows, 2018)
60		Submachine Universe (Windows, 2017)
60		Nancy Drew: The Silent Spy (Windows, 2017)
60		Lisssn (Windows, 2018)
60		Remedy (Windows, 2004)
60		Stonewall Penitentiary (Windows, 2018)
60		Engineering Jones and the Time Thieves of DSPea (DOS, 1991)
60		SteelLIFE (Windows, 2019)
60		The Outpost Nine: Episode 1 (Windows, 2018)
60		Nancy Drew: Labyrinth of Lies (Windows, 2017)
60		Nancy Drew: Sea of Darkness (Windows, 2017)
60		Preston Sterling and the Legend of Excalibur (Windows, 2016)
60		Ceasing to be her Demise (Windows, 2016)
60		Catyph: The Kunci Experiment (Windows, 2016)
60		Time Stand Still (Windows, 2006)
60		Świrus (Windows, 1996)
60		Event[0] (Windows, 2016)
60		Hope Springs Eternal (Windows, 2005)
60		Profound Red (Windows, 2017)
41		Space Quest: Vohaul Strikes Back (Windows, 2011)
40		Technobabylon: Part 3 - In Nuntius Veritas (Windows, 2011)
40		Space Quest II: Roger Wilco in Vohaul's Revenge (Windows, 2011)
40		Wretcher (Windows, 2011)

Notes: Games similar to Egress - The Test of STS-417, Games like Egress - The Test of STS-417, Windows, Adventure, Sci-Fi, Futuristic, Graphic Adventure, Detective, Mystery, Persistent, 1st-person, Fixed, Flip-screen, Adventure Game Studio, AGS, PC, Game Similarities.