Games like Island Treasures
Games like Island Treasures include Webbed, Portal 2, Pizza Tower, Trine 2: Complete Story, and LIMBO. We matched them by the tags players give Island Treasures on Steam (2D Platformer, Puzzle Platformer, Puzzle, Platformer, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

Webbed
Shared: 2D Platformer · Puzzle Platformer · Platformer

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Funny

Trine 2: Complete Story
Shared: Puzzle Platformer · 2D Platformer · Platformer

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

SANABI
Shared: 2D Platformer · Adventure · Pixel Graphics

FEZ
Shared: Puzzle · Platformer · Puzzle Platformer

Planet of Lana
Shared: Puzzle Platformer · 2D Platformer · Puzzle

ANIMAL WELL
Shared: Puzzle · Puzzle Platformer · Platformer

Öoo
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Braid
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Laughing to Die
Shared: Puzzle · 2D Platformer · Adventure

Celeste
Shared: 2D Platformer · Platformer · Pixel Graphics

Chained Together
Shared: Platformer · Adventure · Puzzle Platformer

Out There Somewhere
Shared: Platformer · Puzzle · Adventure

Neva
Shared: Platformer · Adventure · Puzzle

Mind Over Magnet
Shared: Puzzle Platformer · Puzzle · 2D Platformer

Squishy the Suicidal Pig
Shared: Puzzle · Puzzle Platformer · Platformer

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Funny

Creepy Tale
Shared: Puzzle Platformer · 2D Platformer · Puzzle

ANTONBLAST
Shared: 2D Platformer · 2D · Puzzle Platformer

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer

Trine Enchanted Edition
Shared: Puzzle Platformer · 2D Platformer · Action-Adventure

Pikuniku
Shared: Puzzle · Adventure · Platformer