84		Drakkhen (Windows, 2018)
82		Legend of Grimrock (Windows, 2012)
80		Drakkhen (DOS, 1990)
55		Zombidle (Windows, 2017)
54		Legend of Grimrock II (Windows, 2014)
54		The Lords of the Earth Flame (Windows, 2016)
54		Clicker Heroes (Windows, 2015)
53		Eye of the Beholder II: The Legend of Darkmoon (DOS, 1991)
52		Might & Magic X: Legacy (Windows, 2014)
52		Lamia Must Die (Windows, 2014)
52		Might and Magic VI: The Mandate of Heaven (Windows, 1998)
52		Akalabeth: World of Doom (Windows, 2014)
52		Stonekeep (DOS, 1995)
51		Might and Magic VII: For Blood and Honor (Windows, 1999)
50		Menzoberranzan (DOS, 1994)
50		Ishar 3: The Seven Gates of Infinity (DOS, 1994)
50		Eye of the Beholder III: Assault on Myth Drannor (DOS, 1993)
50		Ishar 2: Messengers of Doom (DOS, 1993)
50		Towers: Lord Baniff's Deceit (DOS, 1994)
50		Ishar 3: The Seven Gates of Infinity (Windows, 1999)
50		Yendorian Tales: The Tyrants of Thaine (DOS, 1997)
50		Yendorian Tales: Book I - Chapter 2 (DOS, 1996)
50		Ishar: Legend of the Fortress (DOS, 1992)
50		Hexx: Heresy of the Wizard (DOS, 1994)
50		Dark Designs I: Grelminar's Staff (DOS, 1991)
50		Stonekeep (Windows, 2008)
50		Wizards & Warriors (Windows, 2000)
50		Vanguard: Saga of Heroes (Windows, 2007)
50		Horizons: Empire of Istaria (Windows, 2003)
50		Mistmare (Windows, 2003)
50		Might and Magic VIII: Day of the Destroyer (Windows, 2000)
50		Rinne (Windows, 2005)
50		Dark Designs II: Closing the Gate (DOS, 1991)
50		Might and Magic IX (Windows, 2002)
50		Keef the Thief: A Boy and His Lockpick (DOS, 1989)
50		Demise: Rise of the Ku'tan (Windows, 2000)
50		Abandoned Places: A Time for Heroes (DOS, 1992)

Notes: Games similar to Hyakki Castle, Games like Hyakki Castle, Asakusa Studios, Happinet, Windows, Role-Playing, RPG, Fantasy, Real-Time, 1st-person, Fixed, Flip-screen, PC, Game Similarities.