Spooky!

Features multiple aliens that bear a close resemblance to creatures from the Cthulhu Mythos.

Eye of Cthulhu and Brain of Cthulhu are two prominent boss characters. The final boss, the Moon Lord, bears very close resemblance to Cthulhu.

A third person MOBA with gods from different pantheons as playable characters. Ah-Muzen-Cab has a purchasable skin inspired by Cthulhu, named "The Dark

Cthulhu and Shoggoth can be summoned during gameplay.

A puzzle video game involving magnetism, leading to a world with Lovecraftian inspired monsters, including Cthulhu.

Featuring Cthulhu-themed expansion "The Stars Are Left"

mglw'nafh fhthagn-ngah cf'ayak 'vulgtmm vugtlag'n

No game is darker than Darkest Dungeon

I never found Cthulhu, but he's in there