Games like Super Onion Boy+
Games like Super Onion Boy+ include SANABI, Sonic Origins, Sonic Superstars, Celeste, and Webbed. We matched them by the tags players give Super Onion Boy+ on Steam (2D Platformer, Action, Casual, Platformer, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · 2D Platformer · Adventure

Sonic Origins
Shared: 2D Platformer · Action · Adventure

Sonic Superstars
Shared: Action · 2D Platformer · Platformer

Celeste
Shared: 2D Platformer · Platformer · Pixel Graphics

Webbed
Shared: 2D Platformer · Cute · Platformer

Katana ZERO
Shared: Action · 2D Platformer · Platformer

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

Brawlhalla
Shared: 2D Platformer · Casual · Platformer

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

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

Skul: The Hero Slayer
Shared: Action · 2D · Platformer

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

Pikuniku
Shared: Casual · Adventure · Action

Tribal Hunter
Shared: 2D Platformer · Action · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Action

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

Oozi: Earth Adventure
Shared: 2D Platformer · Platformer · Casual

Gensokyo Night Festival
Shared: Action · Casual · Pixel Graphics

Himno
Shared: Platformer · 2D · 2D Platformer

Owlboy
Shared: Platformer · Adventure · Pixel Graphics

Trine 5: A Clockwork Conspiracy
Shared: Action · Platformer · Adventure

Smilemo
Shared: Action · 2D Platformer · Platformer

Gravity Circuit
Shared: Action · Platformer · 2D Platformer

Super Bernie World
Shared: Action · 2D Platformer · Adventure