Games like Survival Island
Games like Survival Island include Don't Starve, Terraria, Dune: Awakening, The Long Dark, and Valheim. We matched them by the tags players give Survival Island on Steam (Exploration, Hidden Object, Sandbox, Perma Death, and PvE): closest matches first, and among equally close ones the better-known games.

Don't Starve
Shared: Sandbox · Survival · Perma Death

Terraria
Shared: Sandbox · Survival · Exploration

Dune: Awakening
Shared: Exploration · Sandbox · Survival

The Long Dark
Shared: Exploration · Survival · Sandbox

Valheim
Shared: Survival · Exploration · Crafting

The Forest
Shared: Survival · Exploration · Crafting

Starbound
Shared: Sandbox · Survival · Exploration

No Man's Sky
Shared: Exploration · Sandbox · Survival

Subnautica
Shared: Exploration · Survival · Crafting

Soulmask
Shared: Survival · PvE · Sandbox

Core Keeper
Shared: Exploration · Sandbox · Survival

Avorion
Shared: Exploration · Sandbox · PvE

Enshrouded
Shared: Survival · Exploration · Crafting

ASTRONEER
Shared: Exploration · Sandbox · Survival

Scrap Mechanic
Shared: Sandbox · Survival · Crafting

ARK: Survival Ascended
Shared: Survival · Sandbox · Crafting

Forager
Shared: Sandbox · Survival · Crafting

Rust
Shared: Survival · Sandbox · Crafting

Sons Of The Forest
Shared: Survival · Exploration · Crafting

A Game About Digging A Hole
Shared: Exploration · Sandbox · Crafting

Erzurum
Shared: Exploration · Survival · Crafting

ICARUS
Shared: Exploration · Survival · Crafting

Portal Knights
Shared: Sandbox · Exploration · Survival

Ancestors: The Humankind Odyssey
Shared: Exploration · Survival · Crafting