47		Timequest (DOS, 1991)
46		Frederik Pohl's Gateway (DOS, 1992)
45		Demoniak (DOS, 1991)
44		Gateway II: Homeworld (DOS, 1993)
42		The Star Portal (DOS, 1988)
42		Guardians of Infinity: To Save Kennedy (DOS, 1988)
42		Star Trek: First Contact (DOS, 1988)
42		The Twilight Zone (DOS, 1988)
41		Stationfall (DOS, 1987)
41		Frederik Pohl's Gateway (Windows, 1995)
41		Supernova (DOS, 1987)
40		Versus: The Elite Trials (Windows, 2016)
40		Alien (DOS, 1982)
40		Starcross (DOS, 1982)
40		Gun Mute (Windows, 2008)
40		Kingdom Without End (DOS, 2001)
40		Las llaves del tiempo (DOS, 1999)
40		Planetfall (DOS, 1983)
40		Amazon (DOS, 1984)
40		Nine Princes in Amber (DOS, 1985)
40		Rendezvous with Rama (DOS, 1985)
40		The Adventures of Buckaroo Banzai: Across the Eighth Dimension (DOS, 1985)
40		Dopplegänger (DOS, 1985)
40		Star Trek: The Kobayashi Alternative (DOS, 1985)
40		Star Trek: The Promethean Prophecy (DOS, 1986)

Notes: Games similar to Projekt Prometheus, Games like Projekt Prometheus, Extase, Bomico Vertriebs und Investitions GmbH, DOS, Adventure, Sci-Fi, Futuristic, Interactive Fiction, Text Adventure, PC, Game Similarities.