Games like Westmark Manor
Games like Westmark Manor include Poppy Playtime, Little Nightmares, Little Nightmares II, SOMA, and The Room Three. We matched them by the tags players give Westmark Manor on Steam (Adventure, Dark, Lovecraftian, Puzzle, and Survival Horror): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Puzzle · Horror · Dark

Little Nightmares
Shared: Adventure · Dark · Horror

Little Nightmares II
Shared: Adventure · Dark · Puzzle

SOMA
Shared: Dark · Horror · Atmospheric

The Room Three
Shared: Adventure · Puzzle · Mystery

The Room Two
Shared: Puzzle · Mystery · Adventure

Sally Face - Episode One
Shared: Dark · Adventure · Puzzle

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

Bendy and the Ink Machine
Shared: Puzzle · Horror · Dark

The Room 4: Old Sins
Shared: Adventure · Puzzle · Lovecraftian

The Room
Shared: Puzzle · Adventure · Mystery

Amnesia: Rebirth
Shared: Puzzle · Adventure · Horror

INSIDE
Shared: Dark · Atmospheric · Horror

Outer Wilds
Shared: Adventure · Mystery · Puzzle

What Remains of Edith Finch
Shared: Adventure · Mystery · Atmospheric

SIGNALIS
Shared: Survival Horror · Lovecraftian · Dark

Call of Cthulhu®
Shared: Lovecraftian · Adventure · Horror

Darkwood
Shared: Adventure · Survival Horror · Dark

Inside the Backrooms
Shared: Puzzle · Survival Horror · Horror

Penumbra Overture
Shared: Adventure · Horror · Survival Horror

Resident Evil 2
Shared: Survival Horror · Horror · Puzzle

Firewatch
Shared: Adventure · Atmospheric · Mystery

Outlast
Shared: Survival Horror · Horror · Atmospheric

Bendy and the Dark Revival
Shared: Adventure · Horror · Survival Horror