Games like Can I Come In?
Games like Can I Come In? include Outlast, Layers of Fear (2016), SOMA, Five Nights at Freddy's, and MiSide. We matched them by the tags players give Can I Come In? on Steam (Horror, Psychological Horror, Walking Simulator, Atmospheric, and Cinematic): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Psychological Horror · Atmospheric

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

SOMA
Shared: Horror · Psychological Horror · Atmospheric

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

MiSide
Shared: Psychological Horror · Horror · First-Person

Poppy Playtime
Shared: Horror · Psychological Horror · Singleplayer

Visage
Shared: Horror · Psychological Horror · Atmospheric

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

ROUTINE
Shared: Psychological Horror · Atmospheric · Horror

Still Wakes the Deep
Shared: Horror · Psychological Horror · Walking Simulator

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

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

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Atmospheric

Blair Witch
Shared: Horror · Psychological Horror · First-Person

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · First-Person

From The Darkness
Shared: Horror · Psychological Horror · Walking Simulator

Firewatch
Shared: Atmospheric · Walking Simulator · First-Person

Phasmophobia
Shared: Horror · Psychological Horror · Supernatural

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

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

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

The Cabin Factory
Shared: Horror · Psychological Horror · Walking Simulator

SILENT HILL 2
Shared: Horror · Psychological Horror · Atmospheric