Games like Fear Within
Games like Fear Within include Firewatch, Slime Rancher, Fears to Fathom - Woodbury Getaway, [Chillas Art] The Convenience Store, and Fears to Fathom - Ironbark Lookout. We matched them by the tags players give Fear Within on Steam (Adventure, Casual, Singleplayer, Exploration, and Simulation): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Singleplayer · Exploration

Slime Rancher
Shared: Adventure · Exploration · Singleplayer

Fears to Fathom - Woodbury Getaway
Shared: Adventure · Casual · Horror

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

Fears to Fathom - Ironbark Lookout
Shared: Horror · Adventure · Exploration

What Remains of Edith Finch
Shared: Adventure · Exploration · Singleplayer

Fears to Fathom® - Scratch Creek
Shared: Adventure · Horror · Casual

Poppy Playtime
Shared: Singleplayer · Horror · First-Person

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Layers of Fear (2016)
Shared: Horror · Singleplayer · Psychological Horror

MiSide
Shared: Psychological Horror · Singleplayer · Horror

The Park®
Shared: Horror · Singleplayer · Adventure

Scanner Sombre
Shared: Exploration · Adventure · Horror

[Chillas Art] Stigmatized Property
Shared: Adventure · Casual · Horror

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

Outer Wilds
Shared: Exploration · Adventure · Singleplayer

The Exit 8
Shared: Exploration · Horror · Walking Simulator

DREDGE
Shared: Exploration · Adventure · Singleplayer

DAVE THE DIVER
Shared: Casual · Adventure · Exploration

Crime Scene Cleaner
Shared: Singleplayer · Simulation · First-Person

The Forest
Shared: Adventure · Horror · Exploration

The Long Dark
Shared: Exploration · Singleplayer · Adventure

Visage
Shared: Horror · Singleplayer · Psychological Horror

Outlast
Shared: Horror · Singleplayer · First-Person