Games like Claustrophobia
Games like Claustrophobia include SOMA, Outlast 2, Outlast, Resident Evil Village, and Resident Evil 7 Biohazard. We matched them by the tags players give Claustrophobia on Steam (Horror, Psychological Horror, Story Rich, Survival Horror, and Dark): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Psychological Horror · Story Rich

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Outlast
Shared: Horror · Survival Horror · Psychological Horror

Resident Evil Village
Shared: Horror · Survival Horror · Story Rich

Resident Evil 7 Biohazard
Shared: Horror · Survival Horror · Psychological Horror

Darkwood
Shared: Horror · Psychological Horror · Survival Horror

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

Little Nightmares II
Shared: Horror · Adventure · Psychological Horror

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

The Evil Within 2
Shared: Horror · Psychological Horror · Survival Horror

SILENT HILL 2
Shared: Horror · Psychological Horror · Story Rich

Visage
Shared: Horror · Psychological Horror · Survival Horror

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Story Rich

Still Wakes the Deep
Shared: Horror · Psychological Horror · Story Rich

Penumbra Overture
Shared: Horror · Survival Horror · Adventure

The Beast Inside
Shared: Horror · Survival Horror · Adventure

Amnesia: Rebirth
Shared: Story Rich · Horror · Adventure

Blair Witch
Shared: Horror · Psychological Horror · Adventure

Resident Evil Requiem
Shared: Horror · Survival Horror · Story Rich

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

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

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

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror