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

Outlast
Shared: Horror · Atmospheric · Psychological Horror

Poppy Playtime
Shared: Horror · Psychological Horror · Singleplayer

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

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

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

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

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

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

Buckshot Roulette
Shared: Horror · Dark · Psychological

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

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

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

SILENT HILL 2
Shared: Horror · Psychological Horror · Psychological

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

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

Ultimate Custom Night
Shared: Horror · Survival Horror · Singleplayer

Five Nights at Freddy's: Sister Location
Shared: Horror · Survival Horror · Dark

Visage
Shared: Horror · Psychological Horror · Dark

Five Nights at Freddy's 3
Shared: Horror · Psychological Horror · Survival Horror

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

Darkwood
Shared: Horror · Psychological Horror · Survival Horror

MiSide
Shared: Psychological Horror · Horror · First-Person

Summer of '58
Shared: Horror · Psychological Horror · Atmospheric