Games like Dead Frequency
Games like Dead Frequency include Firewatch, What Remains of Edith Finch, The Exit 8, The Forest, and SOMA. We matched them by the tags players give Dead Frequency on Steam (Adventure, Sandbox, Walking Simulator, Exploration, and 3D): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · First-Person

What Remains of Edith Finch
Shared: Walking Simulator · Adventure · Exploration

The Exit 8
Shared: Exploration · Walking Simulator · Horror

The Forest
Shared: Adventure · Horror · First-Person

SOMA
Shared: Horror · Exploration · Dark

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

Poppy Playtime
Shared: Horror · First-Person · Dark

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · First-Person

Still Wakes the Deep
Shared: Walking Simulator · Horror · First-Person

The Long Dark
Shared: Exploration · Adventure · First-Person

Blair Witch
Shared: Adventure · Horror · First-Person

Subnautica 2
Shared: Exploration · Horror · Adventure

Outer Wilds
Shared: Exploration · Adventure · Mystery

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

Bad Parenting 1: Mr. Red Face
Shared: Adventure · Walking Simulator · Horror

Psalm 5:9-13
Shared: Exploration · Walking Simulator · Horror

CARIMARA: Beneath the forlorn limbs
Shared: Adventure · Exploration · 3D

Subnautica
Shared: Exploration · Horror · Adventure

Phasmophobia
Shared: Horror · First-Person · Dark

The Stanley Parable
Shared: Walking Simulator · First-Person · Adventure

Inside the Backrooms
Shared: Adventure · Horror · Exploration

Outlast
Shared: First-Person · Horror · Adventure

Lethal Company
Shared: First-Person · Horror · Exploration

Buckshot Roulette
Shared: Dark · First-Person · Horror