Games like The Anomaly Detective
Games like The Anomaly Detective include The Room Two, Poppy Playtime, Mouthwashing, Layers of Fear (2016), and Firework. We matched them by the tags players give The Anomaly Detective on Steam (Psychological Horror, Walking Simulator, Hidden Object, Puzzle, and Detective): closest matches first, and among equally close ones the better-known games.

The Room Two
Shared: Puzzle · Hidden Object · Mystery

Poppy Playtime
Shared: Puzzle · Singleplayer · Psychological Horror

Mouthwashing
Shared: Psychological Horror · Horror · Walking Simulator

Layers of Fear (2016)
Shared: Psychological Horror · Walking Simulator · Horror

Firework
Shared: Puzzle · Psychological Horror · Horror

The Room Three
Shared: Puzzle · Hidden Object · Mystery

Cube Escape Collection
Shared: Puzzle · Psychological Horror · Horror

Garten of Banban
Shared: Psychological Horror · Singleplayer · Horror

The Room
Shared: Puzzle · Hidden Object · Mystery

The Exit 8
Shared: Walking Simulator · Puzzle · Psychological Horror

Little Nightmares II
Shared: Puzzle · Psychological Horror · Horror

Platform 8
Shared: Psychological Horror · Walking Simulator · Puzzle

Rusty Lake Paradise
Shared: Puzzle · Psychological Horror · Horror

Fran Bow
Shared: Psychological Horror · Puzzle · Horror

Sally Face - Episode One
Shared: Psychological Horror · Puzzle · Horror

What Remains of Edith Finch
Shared: Walking Simulator · Mystery · Atmospheric

Return of the Obra Dinn
Shared: Detective · Puzzle · Mystery

No, I'm not a Human
Shared: Psychological Horror · Horror · Singleplayer

The White Door
Shared: Puzzle · Psychological Horror · Detective

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Little Nightmares
Shared: Horror · Puzzle · Singleplayer

Danganronpa 2: Goodbye Despair
Shared: Detective · Psychological Horror · Mystery

Garten of Banban 2
Shared: Psychological Horror · Puzzle · Singleplayer

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