Games like Apartament 1406: Horror
Games like Apartament 1406: Horror include Outlast, Poppy Playtime, Visage, Outlast 2, and Slender: The Arrival. We matched them by the tags players give Apartament 1406: Horror on Steam (Indie, Horror, Adventure, Psychological Horror, and Video Production): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Psychological Horror · First-Person

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Visage
Shared: Horror · Psychological Horror · Dark

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

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

Blair Witch
Shared: Horror · Adventure · Indie

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Indie

SOMA
Shared: Horror · Psychological Horror · Dark

Little Nightmares
Shared: Horror · Adventure · Indie

From The Darkness
Shared: Horror · Indie · Psychological Horror

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

The Beast Inside
Shared: Horror · Adventure · Indie

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

Little Nightmares II
Shared: Horror · Adventure · Dark

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · First-Person

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

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

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

Penumbra Overture
Shared: Horror · Adventure · Indie

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

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

Sally Face - Episode One
Shared: Indie · Horror · Psychological Horror

IMSCARED
Shared: Indie · Horror · Psychological Horror

Mouthwashing
Shared: Horror · Psychological Horror · Indie