Games like The Nameless
Games like The Nameless include Resident Evil Requiem, Resident Evil Village, Outlast, Resident Evil 7 Biohazard, and Ready or Not. We matched them by the tags players give The Nameless on Steam (Adventure, Action-Adventure, FPS, First-Person, and Horror): closest matches first, and among equally close ones the better-known games.

Resident Evil Requiem
Shared: Horror · Survival Horror · FPS

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

Outlast
Shared: First-Person · Horror · Survival Horror

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

Ready or Not
Shared: FPS · Horror · First-Person

Atomic Heart
Shared: Adventure · FPS · Action-Adventure

Dying Light
Shared: Horror · Survival Horror · First-Person

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

Choo-Choo Charles
Shared: Horror · Survival Horror · First-Person

Nightmare of Decay
Shared: Horror · FPS · Survival Horror

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

The Beast Inside
Shared: Adventure · Horror · First-Person

Amnesia: Rebirth
Shared: Action-Adventure · First-Person · Adventure

Bendy and the Dark Revival
Shared: Horror · First-Person · Adventure

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

Amnesia: The Dark Descent
Shared: Horror · First-Person · Survival Horror

Granny
Shared: Horror · First-Person · Survival Horror

The Forest
Shared: Adventure · Horror · First-Person

Hello Neighbor
Shared: Horror · First-Person · Action-Adventure

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

High On Life
Shared: FPS · Adventure · Action-Adventure

METRO 2033 Redux
Shared: FPS · Horror · First-Person

Metro Exodus
Shared: FPS · Horror · First-Person

Dead Island 2
Shared: Action-Adventure · First-Person · Adventure