Games like Papa
Games like Papa include Firewatch, Mouthwashing, What Remains of Edith Finch, Layers of Fear (2016), and Amnesia: A Machine For Pigs. We matched them by the tags players give Papa on Steam (Walking Simulator, First-Person, Horror, Psychological Horror, and Story Rich): closest matches first, and among equally close ones the better-known games.
Firewatch
Shared: Walking Simulator · Adventure · Story Rich
Mouthwashing
Shared: Horror · Psychological Horror · Story Rich
What Remains of Edith Finch
Shared: Walking Simulator · Story Rich · First-Person
Layers of Fear (2016)
Shared: Horror · Walking Simulator · Psychological Horror
Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · First-Person
MiSide
Shared: Psychological Horror · Horror · Story Rich
SOMA
Shared: Horror · Psychological Horror · Story Rich
Phasmophobia
Shared: Horror · Psychological Horror · First-Person
Still Wakes the Deep
Shared: Horror · Psychological Horror · First-Person
Blair Witch
Shared: Horror · Psychological Horror · First-Person
The Beginner's Guide
Shared: Walking Simulator · Story Rich · First-Person
No, I'm not a Human
Shared: Horror · Psychological Horror · Story Rich
Sally Face - Episode One
Shared: Psychological Horror · Story Rich · Horror
The Park®
Shared: Walking Simulator · Horror · First-Person
Outlast
Shared: First-Person · Horror · Psychological Horror
Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · First-Person
Dagon: by H. P. Lovecraft
Shared: Horror · First-Person · Story Rich
KARMA: The Dark World
Shared: Walking Simulator · Horror · First-Person
Poppy Playtime
Shared: Horror · First-Person · Psychological Horror
Summer of '58
Shared: Horror · Walking Simulator · Psychological Horror
Welcome to Kowloon
Shared: Horror · Walking Simulator · Psychological Horror
Demonologist
Shared: Horror · Psychological Horror · First-Person
Visage
Shared: Horror · Psychological Horror · First-Person
The Beast Inside
Shared: Horror · First-Person · Adventure