Games like Ember Island
Games like Ember Island include SANABI, Skul: The Hero Slayer, Shovel Knight: Treasure Trove, Celeste, and Katana ZERO. We matched them by the tags players give Ember Island on Steam (Action, Adventure, Platformer, 2D Platformer, and Side Scroller): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Adventure · 2D Platformer

Skul: The Hero Slayer
Shared: Action · 2D · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Platformer · Adventure · Action

Celeste
Shared: Platformer · 2D Platformer · Pixel Graphics

Katana ZERO
Shared: Action · Platformer · Pixel Graphics

Dust: An Elysian Tail
Shared: Action · Platformer · Adventure

Broforce
Shared: Action · Platformer · 2D

Sonic Mania
Shared: Platformer · 2D · Adventure

Owlboy
Shared: Adventure · Platformer · Pixel Graphics

Hollow Knight
Shared: Platformer · 2D · Adventure

Blasphemous 2
Shared: Adventure · 2D Platformer · Fantasy

Mark of the Ninja
Shared: Platformer · Action · 2D

Pizza Tower
Shared: 2D Platformer · Platformer · Action

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · Pixel Graphics

Dead Cells
Shared: Adventure · 2D · Pixel Graphics

Deadlight
Shared: Action · Platformer · Adventure

NINJA GAIDEN: Ragebound
Shared: Action · Platformer · 2D Platformer

Smilemo
Shared: Action · Adventure · Platformer

Super Meat Boy
Shared: Platformer · 2D Platformer · 2D

Lone Fungus
Shared: Adventure · Action · 2D Platformer

Rogue Legacy
Shared: Platformer · Action · 2D

Ori and the Will of the Wisps
Shared: Platformer · Action · Adventure

Himno
Shared: Platformer · Adventure · 2D

Hyper Light Drifter
Shared: Adventure · Action · Pixel Graphics