Games like Eternal
Games like Eternal include Resident Evil Village, Resident Evil Requiem, Left 4 Dead 2, Resident Evil 7 Biohazard, and Outlast. We matched them by the tags players give Eternal on Steam (Survival Horror, Psychological Horror, Horror, FPS, and Shooter): closest matches first, and among equally close ones the better-known games.

Resident Evil Village
Shared: Survival Horror · Horror · Action

Resident Evil Requiem
Shared: Survival Horror · Horror · FPS

Left 4 Dead 2
Shared: FPS · Zombies · Shooter

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

Outlast
Shared: Survival Horror · Horror · Psychological Horror

Ready or Not
Shared: FPS · Shooter · Horror

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

Dying Light
Shared: Survival Horror · Horror · Zombies

Outlast 2
Shared: Psychological Horror · Survival Horror · Horror

Resident Evil 4
Shared: Survival Horror · Horror · Action

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

METRO 2033 Redux
Shared: FPS · Horror · Action

Choo-Choo Charles
Shared: Survival Horror · Horror · Shooter

Dead Space
Shared: Survival Horror · Horror · Psychological Horror

Darkwood
Shared: Survival Horror · Horror · Psychological Horror

Resident Evil 2
Shared: Survival Horror · Horror · Zombies

The Outlast Trials
Shared: Horror · Survival Horror · Psychological Horror

Resident Evil 4 (2005)
Shared: Survival Horror · Horror · Action

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

Half-Life: Alyx
Shared: FPS · Horror · Shooter

F.E.A.R.
Shared: Horror · FPS · Action

Back 4 Blood
Shared: FPS · Zombies · Shooter

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

METRO Last Light Redux
Shared: FPS · Horror · Action