64		The Secrets of Da Vinci: The Forbidden Manuscript (Windows, 2006)
63		Sterling's Gift (Windows, 2007)
62		The History Channel: Lost Worlds (Windows, 2008)
62		Jerusalem: The Three Roads to the Holy Land (Windows, 2002)
60		Piri the Explorer Ship (Windows, 1998)
60		Pyramid: Challenge of the Pharaoh's Dream (Windows, 1996)
60		Genesys (Windows, 2000)
52		Versailles II: Testament of the King (Windows, 2002)
51		Klockwerk: The Shadow in the Cathedral (Windows, 2009)
51		Flux Family Secrets: The Ripple Effect (Windows, 2009)
50		Eagle Eye Mysteries in London (DOS, 1994)
50		Flux Family Secrets: The Rabbit Hole (Windows, 2010)
41		Sethi and the Inca Wizard (Windows, 2001)
40		Versailles 1685 (DOS, 1997)
40		Treasure Hunter (Windows, 1997)
40		Golden Gate (Windows, 1997)
40		Versailles 1685 (Windows, 1996)

Notes: Games similar to ECHO: Secrets of the Lost Cavern, Games like ECHO: Secrets of the Lost Cavern, Kheops Studio, The Adventure Company, Windows, Adventure, Educational, History, Puzzle elements, 1st-person, Caveman, PC, Game Similarities.