99		Ultima Underworld: The Stygian Abyss (Windows, 2014)
99		Ultima Underworld II: Labyrinth of Worlds (DOS, 1993)
99		Ultima Underworld II: Labyrinth of Worlds (Windows, 2014)
73		DeathKeep (Windows, 1996)
47		Anvil of Dawn (DOS, 1995)
45		Gothic 3: Forsaken Gods (Windows, 2008)
45		Anvil of Dawn (Windows, 2013)
45		Amulets & Armor (DOS, 1997)
44		Obitus (DOS, 1991)
42		Rol Crusaders (DOS, 1995)
42		Descent to Undermountain (DOS, 1997)
42		Counter Spell (Windows, 2015)
42		Descent to Undermountain (Windows, 1997)
41		Zanzarah: The Hidden Portal (Windows, 2002)
41		VR Dungeon Knight (Windows, 2017)
40		Prevent the Fall (Windows, 2017)
40		The Afterwoods (Windows, 2017)
40		Ravensword: Shadowlands (Windows, 2013)
40		Sword of Moonlight (Windows, 2000)
40		Knights of the Temple II (Windows, 2005)
40		Verlies II (Windows, 2015)
40		Novus Inceptio (Windows, 2015)
40		Runes of Brennos (Windows, 2015)

Notes: Games similar to Ultima Underworld: The Stygian Abyss, Games like Ultima Underworld: The Stygian Abyss, Blue Sky Productions, ORIGIN Systems, Inc., DOS, Action, Role-Playing, RPG, Fantasy, 1st-person, Dungeon Crawler, Ultima, PC, Game Similarities.