Games like Chernobyl: Origins
Games like Chernobyl: Origins include SOMA, Sally Face - Episode One, Poppy Playtime, Outlast, and Firework. We matched them by the tags players give Chernobyl: Origins on Steam (Psychological Horror, 1980s, Survival, Atmospheric, and Horror): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Horror · Atmospheric

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

Poppy Playtime
Shared: Horror · Psychological Horror · Survival

Outlast
Shared: Psychological Horror · Horror · Atmospheric

Firework
Shared: Horror · Psychological Horror · Atmospheric

Darkwood
Shared: Psychological Horror · Horror · Atmospheric

Little Nightmares II
Shared: Horror · Psychological Horror · Atmospheric

Little Nightmares
Shared: Atmospheric · Horror · Dark

Inside the Backrooms
Shared: Psychological Horror · Horror · Puzzle

The Room Two
Shared: Atmospheric · Horror · Puzzle

Fran Bow
Shared: Psychological Horror · Horror · Atmospheric

Rusty Lake Paradise
Shared: Psychological Horror · Horror · Atmospheric

Subnautica 2
Shared: Survival · Horror · Exploration

Outer Wilds
Shared: Exploration · Atmospheric · Mystery

Outlast 2
Shared: Psychological Horror · Horror · Atmospheric

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

Detention
Shared: Psychological Horror · Horror · Atmospheric

OMORI
Shared: Psychological Horror · Hand-drawn · Horror

DISTRAINT: Deluxe Edition
Shared: Psychological Horror · Horror · Atmospheric

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

ROUTINE
Shared: Psychological Horror · Atmospheric · Dark

Lethal Company
Shared: Horror · Psychological Horror · Exploration

Amnesia: A Machine For Pigs
Shared: Horror · Psychological Horror · Atmospheric

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric