Games like Mirror Forge
Games like Mirror Forge include Outlast, Poppy Playtime, No, I'm not a Human, Outlast 2, and Darkwood. We matched them by the tags players give Mirror Forge on Steam (Psychological Horror, Horror, Survival Horror, Survival, and Dark): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Survival Horror · Psychological Horror

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

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

Outlast 2
Shared: Psychological Horror · Horror · Survival Horror

Darkwood
Shared: Horror · Survival Horror · Psychological Horror

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

SOMA
Shared: Psychological Horror · Horror · Survival Horror

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

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

Visage
Shared: Psychological Horror · Horror · Survival Horror

The Forest
Shared: Horror · Survival · Survival Horror

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror

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

The Dark Pictures Anthology: House of Ashes
Shared: Horror · Psychological Horror · Survival Horror

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

Mouthwashing
Shared: Psychological Horror · Horror · Psychological

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

The Dark Pictures Anthology: Little Hope
Shared: Horror · Psychological Horror · Survival Horror

SILENT HILL f
Shared: Psychological Horror · Horror · Survival Horror

Slender: The Arrival
Shared: Horror · Survival Horror · Psychological Horror

The Coffin of Andy and Leyley
Shared: Psychological Horror · Psychological · Multiple Endings

Five Nights at Freddy's 4
Shared: Horror · Survival Horror · Psychological Horror

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

Hello Neighbor
Shared: Horror · Survival Horror · First-Person