Games like For Sale
Games like For Sale include Firewatch, What Remains of Edith Finch, Amnesia: A Machine For Pigs, Layers of Fear (2016), and Outer Wilds. We matched them by the tags players give For Sale on Steam (Exploration, Walking Simulator, Psychological Horror, Mystery, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Walking Simulator · Mystery · Atmospheric

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

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · Exploration

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

Outer Wilds
Shared: Exploration · Mystery · Atmospheric

Scanner Sombre
Shared: Exploration · Walking Simulator · Horror

DREDGE
Shared: Exploration · Mystery · Psychological Horror

The Park®
Shared: Walking Simulator · Psychological Horror · Horror

SOMA
Shared: Psychological Horror · Horror · Exploration

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

Fears to Fathom - Woodbury Getaway
Shared: Psychological Horror · Horror · Walking Simulator

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

The Exit 8
Shared: Exploration · Walking Simulator · Psychological Horror

SILENT HILL 2
Shared: Psychological Horror · Horror · Atmospheric

OMORI
Shared: Psychological Horror · Multiple Endings · Horror

The Vanishing of Ethan Carter
Shared: Mystery · Walking Simulator · Exploration

Iron Lung
Shared: Psychological Horror · Horror · Atmospheric

No, I'm not a Human
Shared: Psychological Horror · Horror · Multiple Endings

Five Nights at Freddy's: Security Breach
Shared: Horror · Exploration · Singleplayer

Gone Home
Shared: Walking Simulator · Exploration · Atmospheric

[Chillas Art] The Convenience Store
Shared: Psychological Horror · Horror · Adventure

Escape the Backrooms
Shared: Psychological Horror · Horror · Exploration

Kholat
Shared: Walking Simulator · Psychological Horror · Horror

INFRA
Shared: Exploration · Walking Simulator · Atmospheric