70		The Snow Queen (DOS, 1993)
60		Love's Fiery Imbroglio (DOS, 1988)
60		Adventure Book (included games) (DOS, 2001)
52		The Great Machine (Windows, 2005)
52		The Great Machine (DOS, 2005)
50		Hippy's Quest I: PEACE MAN (DOS, 1990)
50		A Dark and Stormy Entry (Windows, 2001)
43		A Dark and Deadly Path (Windows, 2006)
41		Wonderland (DOS, 1990)
40		Kingdom Without End (DOS, 2001)
40		I-0: Jailbait on Interstate Zero (DOS, 1997)
40		The Eternal Adventure (DOS, 1995)
40		I-0: Jailbait on Interstate Zero (Windows, 1997)
40		Judge Dredd: Countdown Sector 106 (Windows, 2015)
40		Alice in Wonderland (DOS, 1989)

Notes: Games similar to Project Delta, Games like Project Delta, Windows, Adventure, Interactive Fiction, Text Adventure, Choose-Your-Own-Adventure, Female, PC, Game Similarities.