Games like Where Is Mommy
Games like Where Is Mommy include MiSide, Phasmophobia, Poppy Playtime, Firewatch, and No, I'm not a Human. We matched them by the tags players give Where Is Mommy on Steam (Simulation, 3D, First-Person, Investigation, and Mystery): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Psychological Horror · First-Person · 3D

Phasmophobia
Shared: Psychological Horror · Horror · First-Person

Poppy Playtime
Shared: First-Person · Singleplayer · Horror

Firewatch
Shared: First-Person · Mystery · Adventure

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

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

Shift At Midnight
Shared: Simulation · 3D · Horror

What Remains of Edith Finch
Shared: First-Person · Mystery · Singleplayer

Blue Prince
Shared: Mystery · Investigation · First-Person

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

Subliminal
Shared: Psychological Horror · Mystery · Singleplayer

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

Mouthwashing
Shared: Psychological Horror · Horror · Indie

Layers of Fear (2016)
Shared: First-Person · Psychological Horror · Horror

Dollmare
Shared: Simulation · 3D · First-Person

Outlast
Shared: First-Person · Psychological Horror · Horror

Buckshot Roulette
Shared: First-Person · 3D · Horror

Psalm 5:9-13
Shared: Psychological Horror · Mystery · Indie

Garten of Banban 2
Shared: First-Person · Singleplayer · 3D

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

Don't Play This
Shared: Psychological Horror · Indie · Mystery

The Test
Shared: Simulation · Psychological Horror · Singleplayer

Outer Wilds
Shared: Mystery · Adventure · Singleplayer

[Chillas Art] The Convenience Store
Shared: Simulation · Psychological Horror · Indie