Games like Harvest Island
Games like Harvest Island include Sally Face - Episode One, SOMA, OMORI, Outer Wilds, and Darkwood. We matched them by the tags players give Harvest Island on Steam (Story Rich, Horror, Dark, Exploration, and Farming Sim): closest matches first, and among equally close ones the better-known games.

Sally Face - Episode One
Shared: Story Rich · Horror · Dark

SOMA
Shared: Horror · Story Rich · Dark

OMORI
Shared: Story Rich · Psychological Horror · Horror

Outer Wilds
Shared: Story Rich · Exploration · Mystery

Darkwood
Shared: Horror · Dark · Psychological Horror

What Remains of Edith Finch
Shared: Story Rich · Exploration · Mystery

DAVE THE DIVER
Shared: Exploration · Pixel Graphics · Adventure

DISTRAINT: Deluxe Edition
Shared: Horror · Story Rich · Psychological Horror

Firewatch
Shared: Story Rich · Mystery · Exploration

Little Nightmares II
Shared: Horror · Dark · Story Rich

Poppy Playtime
Shared: Horror · Dark · Mystery

No, I'm not a Human
Shared: Horror · Story Rich · Psychological Horror

Mouthwashing
Shared: Horror · Story Rich · Psychological Horror

INMOST
Shared: Story Rich · Exploration · Pixel Graphics

Amnesia: A Machine For Pigs
Shared: Horror · Story Rich · Exploration

Little Nightmares
Shared: Horror · Dark · Story Rich

Ib
Shared: Horror · Story Rich · Pixel Graphics

Fran Bow
Shared: Story Rich · Horror · Psychological Horror

DREDGE
Shared: Exploration · Mystery · Horror

MiSide
Shared: Story Rich · Horror · Psychological Horror

Layers of Fear (2016)
Shared: Horror · Story Rich · Psychological Horror

Clair Obscur: Expedition 33
Shared: Story Rich · Exploration · Fantasy

Mad Father
Shared: Horror · Story Rich · Exploration

The Test
Shared: Story Rich · Psychological Horror · Pixel Graphics