72		Vampire: The Masquerade - Bloodlines (Windows, 2004)
55		Viking Days (Windows, 2018)
54		The Elder Scrolls V: Skyrim (Windows, 2011)
54		The Elder Scrolls IV: Oblivion (Windows, 2006)
53		The Elder Scrolls III: Morrowind (Windows, 2002)
52		Lands of Lore: Guardians of Destiny (DOS, 1997)
52		Lands of Lore: Guardians of Destiny (Windows, 1997)
52		An Elder Scrolls Legend: Battlespire (Windows, 2015)
51		Dark Messiah: Might and Magic (Windows, 2006)
51		Fable III (Windows, 2011)
51		The Elder Scrolls: Chapter II - Daggerfall (DOS, 1996)
51		The Elder Scrolls: Arena (DOS, 1994)
50		An Elder Scrolls Legend: Battlespire (DOS, 1997)
50		Two Worlds (Windows, 2007)
50		Gothic 3 (Windows, 2006)
50		Lands of Lore III (Windows, 1999)
50		Two Worlds II (Windows, 2011)
43		The Deep Paths: Labyrinth of Andokost (Windows, 2016)
42		Age of Conan: Hyborian Adventures (Windows, 2008)
42		Asheron's Call 2: Fallen Kings (Windows, 2002)
42		Guild Wars: Nightfall (Windows, 2006)
41		Vampire: The Masquerade - Redemption (Windows, 2000)
40		The Chronicles of Spellborn (Windows, 2008)
40		Dungeon Hack (DOS, 1993)

Notes: Games similar to Crimson Keep, Games like Crimson Keep, Merge Games Ltd., Windows, Role-Playing, RPG, Fantasy, Action RPG, Roguelike, Horror, 1st-person, PC, Game Similarities.