Games like A Demon's Game - Episode 1
Games like A Demon's Game - Episode 1 include Outlast, Resident Evil 7 Biohazard, Poppy Playtime, The Beast Inside, and Outlast 2. We matched them by the tags players give A Demon's Game - Episode 1 on Steam (Action, Adventure, Horror, Psychological Horror, and Puzzle): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Psychological Horror · First-Person

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

Poppy Playtime
Shared: Horror · Puzzle · Psychological Horror

The Beast Inside
Shared: Adventure · Horror · Action

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

The Forest
Shared: Horror · Adventure · Action

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

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Puzzle

Resident Evil Village
Shared: Horror · Action · First-Person

Little Nightmares II
Shared: Adventure · Horror · Puzzle

We Happy Few
Shared: Adventure · Action · Psychological Horror

Blair Witch
Shared: Adventure · Horror · Psychological Horror

MADiSON
Shared: Horror · Psychological Horror · Adventure

Among the Sleep - Enhanced Edition
Shared: Horror · Adventure · Walking Simulator

Scorn
Shared: Horror · Puzzle · Psychological Horror

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

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

Darkwood
Shared: Horror · Adventure · Action

Firewatch
Shared: Adventure · Walking Simulator · First-Person

Little Nightmares
Shared: Horror · Adventure · Puzzle

The Evil Within 2
Shared: Horror · Psychological Horror · Action

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

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