Games like Monday the 14th
Games like Monday the 14th include What Remains of Edith Finch, Poppy Playtime, The Witness, Firewatch, and The Exit 8. We matched them by the tags players give Monday the 14th on Steam (Casual, Singleplayer, Atmospheric, Puzzle, and Walking Simulator): closest matches first, and among equally close ones the better-known games.

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

Poppy Playtime
Shared: Singleplayer · Puzzle · Dark

The Witness
Shared: Puzzle · Singleplayer · Exploration

Firewatch
Shared: Atmospheric · Walking Simulator · Singleplayer

The Exit 8
Shared: Puzzle · Walking Simulator · Exploration

Layers of Fear (2016)
Shared: Atmospheric · Singleplayer · Walking Simulator

SOMA
Shared: Atmospheric · Dark · Singleplayer

The Room
Shared: Puzzle · Atmospheric · Singleplayer

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

Little Nightmares
Shared: Atmospheric · Singleplayer · Puzzle

Scanner Sombre
Shared: Atmospheric · Walking Simulator · Exploration

ROUTINE
Shared: Singleplayer · Atmospheric · Dark

Spirit of the North
Shared: Atmospheric · Casual · Puzzle

INFRA
Shared: Atmospheric · Puzzle · Exploration

Riven
Shared: Puzzle · Singleplayer · Atmospheric

Little Nightmares II
Shared: Singleplayer · Puzzle · Atmospheric

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

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

Moncage
Shared: Casual · Puzzle · Singleplayer

Among the Sleep - Enhanced Edition
Shared: Atmospheric · Singleplayer · Walking Simulator

Layers of Fear 2 (2019)
Shared: Atmospheric · Walking Simulator · Singleplayer

LIMBO
Shared: Puzzle · Atmospheric · Dark

Amnesia: A Machine For Pigs
Shared: Atmospheric · Walking Simulator · Singleplayer

Stray
Shared: Atmospheric · Singleplayer · Exploration