Games like Spritz the Happy Onion
Games like Spritz the Happy Onion include Celeste, Super Meat Boy, Pizza Tower, SANABI, and Webbed. We matched them by the tags players give Spritz the Happy Onion on Steam (Precision Platformer, 2D Platformer, Platformer, Action-Adventure, and 2D): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · 2D Platformer

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

Pizza Tower
Shared: 2D Platformer · Platformer · Funny

SANABI
Shared: 2D Platformer · 2D · Action

Webbed
Shared: 2D Platformer · Cute · Platformer

VVVVVV
Shared: Precision Platformer · Platformer · 2D Platformer

I wanna be the Creator
Shared: Platformer · Action-Adventure · Precision Platformer

Bread & Fred
Shared: 2D Platformer · Cute · Precision Platformer

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

Jump King
Shared: Precision Platformer · Platformer · 2D

Downwell
Shared: Precision Platformer · Platformer · 2D Platformer

Grapple Dog
Shared: 2D Platformer · Platformer · 2D

Portal 2
Shared: Platformer · Dark Humor · Funny

Super Mombo Quest
Shared: Precision Platformer · Action-Adventure · Platformer

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

The Messenger
Shared: Platformer · 2D · 2D Platformer

Geometry Dash
Shared: Precision Platformer · 2D · Platformer

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

Katana ZERO
Shared: Platformer · 2D Platformer · Action

Bō: Path of the Teal Lotus
Shared: Precision Platformer · 2D Platformer · Platformer

The End Is Nigh
Shared: Precision Platformer · Platformer · 2D

Pepper Grinder
Shared: 2D Platformer · Platformer · Action-Adventure

Rusted Moss
Shared: Platformer · 2D Platformer · Precision Platformer

SUPER CHICKEN JUMPER
Shared: 2D · Action-Adventure · Cute