Games like Father´s Island
Games like Father´s Island include Blair Witch, Layers of Fear (2016), Firewatch, The Stanley Parable, and Outlast. We matched them by the tags players give Father´s Island on Steam (Indie, Adventure, Horror, Psychological Horror, and Dark Comedy): closest matches first, and among equally close ones the better-known games.

Blair Witch
Shared: Adventure · Horror · Indie

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

Firewatch
Shared: Adventure · Walking Simulator · Indie

The Stanley Parable
Shared: Indie · Comedy · First-Person

Outlast
Shared: Horror · Psychological Horror · First-Person

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Lethal Company
Shared: Horror · First-Person · Psychological Horror

The Beast Inside
Shared: Adventure · Horror · First-Person

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

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

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

Spooky's Jump Scare Mansion: HD Renovation
Shared: Indie · Horror · Adventure

Slender: The Arrival
Shared: Horror · Indie · First-Person

Visage
Shared: Horror · Psychological Horror · Adventure

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

Mouthwashing
Shared: Horror · Psychological Horror · Indie

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

MiSide
Shared: Psychological Horror · Horror · First-Person

Among the Sleep - Enhanced Edition
Shared: Indie · Horror · Adventure

From The Darkness
Shared: Horror · Indie · Psychological Horror

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

Sally Face - Episode One
Shared: Indie · Psychological Horror · Horror

Conarium
Shared: Adventure · Indie · Horror

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