Games like The Kharzov Effect
Games like The Kharzov Effect include Poppy Playtime, Little Nightmares II, MiSide, Little Nightmares, and SOMA. We matched them by the tags players give The Kharzov Effect on Steam (Horror, Psychological Horror, Atmospheric, Puzzle, and 1980s): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Puzzle · Psychological Horror

Little Nightmares II
Shared: Horror · Puzzle · Atmospheric

MiSide
Shared: Psychological Horror · Horror · Atmospheric

Little Nightmares
Shared: Horror · Atmospheric · Puzzle

SOMA
Shared: Horror · Psychological Horror · Atmospheric

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

Firework
Shared: Horror · Puzzle · Psychological Horror

Outlast
Shared: Horror · Atmospheric · Psychological Horror

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

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Atmospheric

Cube Escape Collection
Shared: Horror · Puzzle · Psychological Horror

The Room Two
Shared: Puzzle · Atmospheric · Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Puzzle

We Were Here
Shared: Puzzle · Horror · Escape Room

What Remains of Edith Finch
Shared: Atmospheric · First-Person · Mystery

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Outer Wilds
Shared: Atmospheric · Puzzle · Mystery

The Painscreek Killings
Shared: Horror · Puzzle · Investigation

Servant of the Lake
Shared: Puzzle · Atmospheric · Psychological Horror

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

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

Firewatch
Shared: Atmospheric · First-Person · Mystery

Detention
Shared: Horror · Psychological Horror · Atmospheric