Games like The Letter: Classic Edition
Games like The Letter: Classic Edition include Poppy Playtime, What Remains of Edith Finch, Firewatch, Layers of Fear (2016), and Garten of Banban. We matched them by the tags players give The Letter: Classic Edition on Steam (Adventure, Puzzle, Walking Simulator, 3D, and First-Person): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Puzzle · First-Person · Horror

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

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

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

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

Little Nightmares II
Shared: Adventure · Puzzle · Horror

Little Nightmares
Shared: Adventure · Puzzle · Atmospheric

Garten of Banban 2
Shared: Puzzle · First-Person · Horror

The Room
Shared: Puzzle · Adventure · Atmospheric

The Room Two
Shared: Puzzle · Adventure · Atmospheric

Inside the Backrooms
Shared: Puzzle · Adventure · Horror

The Room Three
Shared: Puzzle · Adventure · Atmospheric

The Exit 8
Shared: Puzzle · Walking Simulator · First-Person

Sally Face - Episode One
Shared: Puzzle · Adventure · Dark

Quern - Undying Thoughts
Shared: Adventure · Puzzle · Walking Simulator

Outlast
Shared: First-Person · Horror · Atmospheric

SOMA
Shared: Atmospheric · Horror · Dark

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

Scorn
Shared: Puzzle · Atmospheric · First-Person

IMSCARED
Shared: Adventure · First-Person · Pixel Graphics

Bendy and the Ink Machine
Shared: Puzzle · First-Person · Horror

ROUTINE
Shared: Adventure · Atmospheric · Puzzle

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

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