Games like No More Pain
Games like No More Pain include MOLE, Mouthwashing, MiSide, Firewatch, and Lethal Company. We matched them by the tags players give No More Pain on Steam (Psychological Horror, Horror, Adventure, First-Person, and Simulation): closest matches first, and among equally close ones the better-known games.

MOLE
Shared: Horror · Psychological Horror · Adventure

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

MiSide
Shared: Psychological Horror · Horror · First-Person

Firewatch
Shared: Adventure · Atmospheric · First-Person

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

What Remains of Edith Finch
Shared: First-Person · Atmospheric · Adventure

Inside the Backrooms
Shared: Horror · Psychological Horror · Adventure

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

Summer of '58
Shared: Horror · Psychological Horror · First-Person

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

Layers of Fear (2016)
Shared: Psychological Horror · Horror · First-Person

[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Adventure

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Outer Wilds
Shared: Exploration · Adventure · Mystery

Fears to Fathom - Ironbark Lookout
Shared: Psychological Horror · Horror · Adventure

Outlast
Shared: Horror · First-Person · Psychological Horror

Scanner Sombre
Shared: Horror · Exploration · Adventure

The Exit 8
Shared: Horror · Psychological Horror · Exploration

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

Amnesia: A Machine For Pigs
Shared: Horror · Psychological Horror · First-Person

The Park®
Shared: Psychological Horror · Horror · First-Person

Iron Lung
Shared: Horror · Psychological Horror · Atmospheric

DREDGE
Shared: Exploration · Adventure · Psychological Horror

SILENT HILL: Townfall
Shared: Horror · Adventure · Psychological Horror