Games like Steelborn
Games like Steelborn include SANABI, Hollow Knight, Rain World, Ori and the Will of the Wisps, and STAR WARS Jedi: Fallen Order™. We matched them by the tags players give Steelborn on Steam (Exploration, 2D Platformer, Shoot 'Em Up, Platformer, and Arcade): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: 2D Platformer · 2D · Story Rich

Hollow Knight
Shared: Platformer · Exploration · 2D

Rain World
Shared: Exploration · Platformer · 2D

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

STAR WARS Jedi: Fallen Order™
Shared: Action-Adventure · Exploration · Platformer

Pipistrello and the Cursed Yoyo
Shared: Exploration · Action-Adventure · 2D Platformer

Airscape - The Fall of Gravity
Shared: Exploration · Shoot 'Em Up · Platformer

Katana ZERO
Shared: Platformer · 2D Platformer · 2D

Arzette: The Jewel of Faramore
Shared: Exploration · 2D Platformer · Platformer

Webbed
Shared: 2D Platformer · Exploration · Platformer

Celeste
Shared: 2D Platformer · Platformer · 2D

Hollow Knight: Silksong
Shared: Exploration · Platformer · 2D

Downwell
Shared: Platformer · 2D Platformer · Arcade

F.I.S.T.: Forged In Shadow Torch
Shared: Platformer · 2D Platformer · Exploration

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Exploration · 2D

Mina the Hollower
Shared: 2D Platformer · Action-Adventure · Platformer

Sonic Origins
Shared: 2D Platformer · Platformer · Action

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

BlazBlue Entropy Effect
Shared: Platformer · 2D · Action-Adventure

MIO: Memories in Orbit
Shared: Exploration · Platformer · Action-Adventure

VVVVVV
Shared: Platformer · 2D Platformer · Exploration

Sonic Superstars
Shared: 2D Platformer · Platformer · Action-Adventure

Narita Boy
Shared: Platformer · Exploration · 2D Platformer

Owlboy
Shared: Platformer · 2D · Adventure