Games like Welcome to Desal
Games like Welcome to Desal include Firewatch, What Remains of Edith Finch, Layers of Fear (2016), Fears to Fathom - Ironbark Lookout, and Fears to Fathom - Woodbury Getaway. We matched them by the tags players give Welcome to Desal on Steam (Casual, Indie, Walking Simulator, Singleplayer, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Walking Simulator · Singleplayer · First-Person

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

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

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

Fears to Fathom - Woodbury Getaway
Shared: Casual · Psychological Horror · First-Person

Fears to Fathom® - Scratch Creek
Shared: Casual · Psychological Horror · Walking Simulator

Mouthwashing
Shared: Psychological Horror · Indie · Walking Simulator

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

MiSide
Shared: Psychological Horror · Singleplayer · First-Person

The Beginner's Guide
Shared: Indie · Walking Simulator · First-Person

SOMA
Shared: Psychological Horror · Story Rich · Horror

No, I'm not a Human
Shared: Indie · Psychological Horror · Singleplayer

Still Wakes the Deep
Shared: Psychological Horror · Walking Simulator · First-Person

The Death | Thần Trùng
Shared: Indie · Psychological Horror · Casual

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

Layers of Fear 2 (2019)
Shared: Indie · Psychological Horror · Walking Simulator

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

Outer Wilds
Shared: Exploration · Story Rich · Indie

Poppy Playtime
Shared: Singleplayer · First-Person · Psychological Horror

Gone Home
Shared: Walking Simulator · Indie · Exploration

The Stanley Parable
Shared: Indie · Walking Simulator · First-Person

Visage
Shared: Psychological Horror · Singleplayer · First-Person

Blair Witch
Shared: Indie · Psychological Horror · First-Person

Scanner Sombre
Shared: Walking Simulator · Exploration · Indie