99		Storms I (DOS, 1993)
80		Sixth Grade Detective (Windows, 2015)
80		The Hero Unmasked! (Windows, 2017)
80		Steve Jackson's Appointment with Fear (Windows, 2014)
75		Son of Stagefright (DOS, 1993)
75		Whatever We Decide to Call this Game (DOS, 1993)
75		The Battle of Philip against the Forces of Creation (DOS, 1993)
75		The Pilot, or: A Flight into Fantasy (DOS, 1993)
73		Escape from the ELI (DOS, 1995)
52		Wayhaven Chronicles: Book One (Windows, 2018)
51		Zombie Exodus: Safe Haven (Windows, 2016)
50		Choice of the Cat (Windows, 2017)
50		Babel (Windows, 2000)
50		Undercover Agent (Windows, 2018)
50		Nightwalker (DOS, 1983)
50		The Martian Job (Windows, 2018)
50		Blood Money (Windows, 2018)
50		Love at Elevation (Windows, 2018)
50		Trials of the Thief-Taker (Windows, 2017)
50		Bureaucracy (DOS, 1987)
50		Thieves' Gambit: The Curse of the Black Cat (Windows, 2014)
50		C.I.A. Adventure (DOS, 1982)
50		Welcome to Moreytown (Windows, 2017)
50		PataNoir (Windows, 2016)
50		Psy High (Windows, 2014)
50		Evertree Inn (Windows, 2017)
50		Lifeline (Windows, 2017)
45		The Misadventure of the Holy Grail (DOS, 1993)
45		Wraith Blaster (DOS, 1993)
44		Heather's Easter Egg Hunt (DOS, 1994)
44		Sir Ramic Hobbs and the High Level Gorilla (DOS, 1994)
43		Pork I: The Great Underground Sewer System (DOS, 1991)
43		Tark Simmons, Priestess of the First Church, in her battle against the Demon of Dark Desire (DOS, 1995)
40		Mystery Mansion (Windows, 2000)
40		Congresswolf (Windows, 2016)
40		Mystery Mansion (DOS, 2001)
40		Deadline (DOS, 1984)
40		Bury me, my Love (Windows, 2019)
40		A Fable (DOS, 1985)
40		Sorcery Is for Saps (Windows, 2016)

Notes: Games similar to Cliff Diver, Investigator for Hire: Crime to the Ninth Power, Games like Cliff Diver, Investigator for Hire: Crime to the Ninth Power, DOS, Adventure, Contemporary, Interactive Fiction, Text Adventure, Crime, Detective, Mystery, Text-based, Spreadsheet, PC, Game Similarities.