64		Kotatsu Ecchi (Windows, 2016)
62		Hentai Case Opening (Windows, 2018)
61		Wakeari! (Windows, 2011)
61		Jinkō Gakuen (Windows, 2011)
60		SchoolMate (Windows, 2007)
60		BotuPlay (Windows, 2006)
60		Jinkō Shōjo 3 (Windows, 2008)
60		Hako (Windows, 2008)
60		Real Kanojo (Windows, 2010)
60		Custom Mate 3 (Windows, 1996)
60		Sexy Beach 3 (Windows, 2006)
60		RapeLay (Windows, 2006)
60		Dōsei (Windows, 1997)
60		Sexy Beach 2 (Windows, 2003)
60		Jinkō Shōjo 2 (Windows, 2004)
60		Oppai Slider 2 (Windows, 2005)
60		Interact Play VR (Windows, 2001)
55		The Affairs of a Chikan!: Vol 7 - Honor Student (Windows, 2015)
50		Mahō no Shippo na 3 (Windows, 2003)
50		Mahō no Shippo na (Windows, 2001)
50		Mahō no Shippo na 2 (Windows, 2002)

Notes: Games similar to Sleeping Girl, Games like Sleeping Girl, Nekoken, Nekoken, Windows, Simulation, Anime, Manga, Adult, 1st-person, PC, Game Similarities.