Games like God's Basement
Games like God's Basement include SOMA, Mouthwashing, What Remains of Edith Finch, Layers of Fear (2016), and Poppy Playtime. We matched them by the tags players give God's Basement on Steam (Horror, Psychological Horror, Dark, Walking Simulator, and Atmospheric): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · Story Rich

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

Poppy Playtime
Shared: Horror · Dark · Psychological Horror

Outlast 2
Shared: Horror · Psychological Horror · First-Person

Firewatch
Shared: Atmospheric · Walking Simulator · Story Rich

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

Outlast
Shared: Horror · Psychological Horror · First-Person

Still Wakes the Deep
Shared: Horror · Psychological Horror · Walking Simulator

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

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Psychological Horror

Little Nightmares II
Shared: Horror · Dark · Psychological Horror

Blair Witch
Shared: Horror · Psychological Horror · First-Person

Little Nightmares
Shared: Horror · Atmospheric · Dark

Fran Bow
Shared: Psychological Horror · Horror · Story Rich

Visage
Shared: Horror · Psychological Horror · Dark

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

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Dark · Horror

Scorn
Shared: Horror · Atmospheric · Dark

MiSide
Shared: Psychological Horror · Horror · Story Rich

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

The Medium
Shared: Horror · Psychological Horror · Atmospheric

Tiny Bunny
Shared: Horror · Dark · Psychological Horror