Games like Effigy : The Descent
Games like Effigy : The Descent include Outlast, SOMA, Poppy Playtime, Resident Evil 7 Biohazard, and Resident Evil Village. We matched them by the tags players give Effigy : The Descent on Steam (Singleplayer, Lovecraftian, Atmospheric, Survival Horror, and Nonlinear): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Atmospheric · Survival Horror · Singleplayer

SOMA
Shared: Atmospheric · Survival Horror · Horror

Poppy Playtime
Shared: Singleplayer · Survival Horror · Horror

Resident Evil 7 Biohazard
Shared: Singleplayer · Survival Horror · Atmospheric

Resident Evil Village
Shared: Singleplayer · Survival Horror · Action

Outlast 2
Shared: Survival Horror · Singleplayer · Atmospheric

Amnesia: The Dark Descent
Shared: Survival Horror · Atmospheric · Horror

The Forest
Shared: Survival Horror · Horror · Action

DREDGE
Shared: Lovecraftian · Exploration · Atmospheric

Five Nights at Freddy's
Shared: Singleplayer · Survival Horror · Horror

SIGNALIS
Shared: Survival Horror · Atmospheric · Lovecraftian

Darkwood
Shared: Survival Horror · Action · Atmospheric

Five Nights at Freddy's: Security Breach
Shared: Singleplayer · Survival Horror · Horror

Lethal Company
Shared: Survival Horror · Horror · Exploration

SILENT HILL 2
Shared: Survival Horror · Atmospheric · Singleplayer

Resident Evil 4
Shared: Singleplayer · Survival Horror · Action

Amnesia: The Bunker
Shared: Atmospheric · Survival Horror · Singleplayer

Visage
Shared: Survival Horror · Singleplayer · Atmospheric

Backrooms: Escape Together
Shared: Survival Horror · Atmospheric · Horror

The Beast Inside
Shared: Survival Horror · Singleplayer · Action

Five Nights at Freddy's 2
Shared: Singleplayer · Survival Horror · Horror

Metro Exodus
Shared: Singleplayer · Atmospheric · Action

The Room Two
Shared: Atmospheric · Singleplayer · Lovecraftian

Ultimate Custom Night
Shared: Singleplayer · Survival Horror · Horror