Games like Ardena
Games like Ardena include Outlast, Outlast 2, Resident Evil Village, Resident Evil 7 Biohazard, and The Beast Inside. We matched them by the tags players give Ardena on Steam (Adventure, Horror, Action, Survival Horror, and First-Person): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Survival Horror · First-Person

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

Resident Evil Village
Shared: Horror · Survival Horror · Action

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

The Beast Inside
Shared: Adventure · Horror · Survival Horror

SOMA
Shared: Horror · Atmospheric · Survival Horror

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

Visage
Shared: Horror · Survival Horror · Adventure

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

The Forest
Shared: Horror · Adventure · Survival Horror

Resident Evil Requiem
Shared: Horror · Survival Horror · Action

Slender: The Arrival
Shared: Horror · Survival Horror · First-Person

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

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

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

Dead by Daylight
Shared: Horror · Survival Horror · Gore

Darkwood
Shared: Horror · Adventure · Survival Horror

The Outlast Trials
Shared: Horror · Survival Horror · First-Person

Blair Witch
Shared: Adventure · Horror · First-Person

Still Wakes the Deep
Shared: Horror · First-Person · Psychological Horror

Backrooms: Escape Together
Shared: Horror · Survival Horror · Atmospheric

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

METRO 2033 Redux
Shared: Horror · Action · Atmospheric

Among the Sleep - Enhanced Edition
Shared: Horror · Adventure · Atmospheric