Games like Project Signal
Games like Project Signal include Outlast, Poppy Playtime, Little Nightmares, Little Nightmares II, and MiSide. We matched them by the tags players give Project Signal on Steam (Adventure, 3D, First-Person, Aliens, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: First-Person · Horror · Atmospheric

Poppy Playtime
Shared: First-Person · Horror · Dark

Little Nightmares
Shared: Adventure · Atmospheric · Horror

Little Nightmares II
Shared: Adventure · Horror · Atmospheric

MiSide
Shared: First-Person · 3D · Horror

Alien: Isolation
Shared: Aliens · Horror · Atmospheric

Firewatch
Shared: Adventure · Atmospheric · First-Person

Choo-Choo Charles
Shared: First-Person · Horror · 3D

Garten of Banban
Shared: First-Person · Horror · 3D

Outlast 2
Shared: First-Person · Horror · Dark

Thief
Shared: Adventure · First-Person · Dark

Five Nights at Freddy's: Security Breach
Shared: First-Person · Horror · 3D

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · First-Person · Horror

Buckshot Roulette
Shared: First-Person · Dark · Horror

SOMA
Shared: Atmospheric · Horror · Dark

Blair Witch
Shared: Adventure · First-Person · Horror

PEAK
Shared: Adventure · First-Person · 3D

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

Serious Sam: Siberian Mayhem
Shared: Adventure · First-Person · 3D

Bramble: The Mountain King
Shared: Adventure · Horror · Atmospheric

Amenti
Shared: Adventure · Horror · Dark

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

Lethal Company
Shared: First-Person · Horror · Atmospheric

