Games like Back
Games like Back include Poppy Playtime, Outlast, Resident Evil 7 Biohazard, Lethal Company, and Inside the Backrooms. We matched them by the tags players give Back on Steam (Survival Horror, Horror, FMV, Thriller, and Immersive Sim): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Survival Horror · First-Person

Outlast
Shared: Horror · Survival Horror · First-Person

Resident Evil 7 Biohazard
Shared: Survival Horror · Horror · First-Person

Lethal Company
Shared: Horror · Survival Horror · First-Person

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

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

Outlast 2
Shared: Horror · Survival Horror · Psychological Horror

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

Five Nights at Freddy's: Security Breach
Shared: Horror · Survival Horror · First-Person

Firework
Shared: Horror · Psychological Horror · Thriller

SOMA
Shared: Horror · Survival Horror · Psychological Horror

Five Nights at Freddy's
Shared: Horror · Survival Horror · Psychological Horror

Dread Flats
Shared: Horror · Survival Horror · Thriller

Bendy and the Ink Machine
Shared: Horror · Survival Horror · First-Person

Resident Evil Village
Shared: Survival Horror · Horror · First-Person

MiSide
Shared: Horror · Psychological Horror · First-Person

The Beast Inside
Shared: Horror · Survival Horror · First-Person

Garten of Banban
Shared: Horror · Survival Horror · Psychological Horror

The Forest
Shared: Horror · Survival Horror · Adventure

Resident Evil Requiem
Shared: Survival Horror · Horror · First-Person

Love is All Around 2
Shared: FMV · Cinematic · Immersive Sim

Darkwood
Shared: Survival Horror · Horror · Psychological Horror

Visage
Shared: Horror · Survival Horror · Psychological Horror

Dark Deception
Shared: Horror · Survival Horror · Psychological Horror