Games like The Artifact Protocol
Games like The Artifact Protocol include SOMA, Outlast, Poppy Playtime, The Beast Inside, and Outlast 2. We matched them by the tags players give The Artifact Protocol on Steam (Adventure, Psychological Horror, Indie, Survival Horror, and Story Rich): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Horror · Story Rich

Outlast
Shared: Survival Horror · Psychological Horror · Horror

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

The Beast Inside
Shared: Adventure · Survival Horror · Horror

Outlast 2
Shared: Psychological Horror · Survival Horror · Horror

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

Resident Evil 7 Biohazard
Shared: Survival Horror · Horror · Psychological Horror

The Evil Within 2
Shared: Psychological Horror · Survival Horror · Horror

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

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

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

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

Lethal Company
Shared: Survival Horror · Horror · Psychological Horror

SILENT HILL 2
Shared: Psychological Horror · Survival Horror · Story Rich

Firewatch
Shared: Adventure · Story Rich · Mystery

Raging Loop
Shared: Adventure · Psychological Horror · Indie

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

Outer Wilds
Shared: Adventure · Story Rich · Mystery

Dark Deception
Shared: Psychological Horror · Horror · Survival Horror

Darkwood
Shared: Adventure · Psychological Horror · Survival Horror

Bendy and the Dark Revival
Shared: Adventure · Horror · Survival Horror

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

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

Blair Witch
Shared: Adventure · Psychological Horror · Indie