Games like HARTS ISLAND
Games like HARTS ISLAND include Firewatch, What Remains of Edith Finch, The Stanley Parable, Gone Home, and The Beginner's Guide. We matched them by the tags players give HARTS ISLAND on Steam (Indie, Adventure, First-Person, Walking Simulator, and Exploration): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

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

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

Gone Home
Shared: Indie · Walking Simulator · Exploration

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

Journey
Shared: Adventure · Indie · Atmospheric

PEAK
Shared: Adventure · First-Person · Exploration

Outer Wilds
Shared: Exploration · Adventure · Story Rich

Layers of Fear (2016)
Shared: Walking Simulator · First-Person · Atmospheric

INFRA
Shared: Exploration · First-Person · Adventure

Valley
Shared: Adventure · First-Person · Indie

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

The Long Dark
Shared: Exploration · First-Person · Adventure

NaissanceE
Shared: Indie · Exploration · Walking Simulator

The Forgotten City
Shared: Adventure · Exploration · Indie

Everybody's Gone to the Rapture
Shared: Indie · Walking Simulator · Adventure

The Witness
Shared: First-Person · Exploration · Indie

Obduction
Shared: Adventure · Indie · First-Person

Tacoma
Shared: Adventure · Walking Simulator · Indie

Fallout 4
Shared: Adventure · Exploration · First-Person

Call of the Sea
Shared: Adventure · First-Person · Indie

Cradle
Shared: Indie · Adventure · First-Person

Jazzpunk: Director's Cut
Shared: Indie · Adventure · Exploration

The Vanishing of Ethan Carter
Shared: Walking Simulator · Atmospheric · First-Person