Games like Dungeon Island
Games like Dungeon Island include Terraria, No Man's Sky, The Witcher 3: Wild Hunt — Remastered, The Forest, and Don't Starve Together. We matched them by the tags players give Dungeon Island on Steam (Mystery Dungeon, Procedural Generation, Open World Survival Craft, RPG, and Relaxing): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Open World Survival Craft · Adventure · 2D

No Man's Sky
Shared: Open World Survival Craft · Procedural Generation · Exploration

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Atmospheric · Fantasy

The Forest
Shared: Open World Survival Craft · Adventure · Action

Don't Starve Together
Shared: Open World Survival Craft · Adventure · RPG

Hogwarts Legacy
Shared: RPG · Fantasy · Adventure

Starbound
Shared: Open World Survival Craft · Adventure · Relaxing

The Long Dark
Shared: Open World Survival Craft · Atmospheric · Exploration

Fallout 4
Shared: RPG · Atmospheric · Exploration

The Elder Scrolls Online - Standard Edition
Shared: RPG · Fantasy · Adventure

Monster Hunter: World
Shared: RPG · Action · Fantasy

Gothic 1 Remake
Shared: RPG · Action · Adventure

Crimson Desert Enhanced
Shared: Action · RPG · Adventure

The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Fantasy · Adventure

Stoneshard
Shared: RPG · Open World Survival Craft · Procedural Generation

Romestead
Shared: RPG · Procedural Generation · Adventure

Far Cry® Primal
Shared: Action · Open World Survival Craft · Adventure

The Elder Scrolls IV: Oblivion® Game of the Year Edition (2009)
Shared: RPG · Fantasy · Adventure

Valheim
Shared: Open World Survival Craft · RPG · Exploration

Eastshade
Shared: RPG · Fantasy · Adventure

Middle-earth: Shadow of War
Shared: RPG · Action · Fantasy

Ancestors: The Humankind Odyssey
Shared: Open World Survival Craft · Exploration · Adventure

God of War
Shared: Action · RPG · Adventure

Subnautica
Shared: Open World Survival Craft · Exploration · Adventure