Games like Second Room
Games like Second Room include MiSide, Poppy Playtime, Outlast, Five Nights at Freddy's, and SOMA. We matched them by the tags players give Second Room on Steam (Survival Horror, Indie, Cute, Hidden Object, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Cute · Psychological Horror · Story Rich

Poppy Playtime
Shared: Survival Horror · Horror · Singleplayer

Outlast
Shared: Survival Horror · Horror · Psychological Horror

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

SOMA
Shared: Psychological Horror · Survival Horror · Horror

Five Nights at Freddy's 2
Shared: Survival Horror · Horror · Psychological Horror

Outlast 2
Shared: Survival Horror · Psychological Horror · Horror

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

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

Bendy and the Ink Machine
Shared: Survival Horror · Horror · Indie

Visage
Shared: Survival Horror · Psychological Horror · Horror

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

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

Slender: The Arrival
Shared: Survival Horror · Indie · Horror

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

Mouthwashing
Shared: Psychological Horror · Indie · Story Rich

Firewatch
Shared: Story Rich · Indie · First-Person

What Remains of Edith Finch
Shared: Story Rich · Indie · First-Person

Amnesia: A Machine For Pigs
Shared: Story Rich · Horror · Psychological Horror

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

Five Nights at Freddy's 4
Shared: Survival Horror · Horror · First-Person

Sally Face - Episode One
Shared: Indie · Psychological Horror · Story Rich

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

The Beast Inside
Shared: Survival Horror · Horror · Indie

