Games like Snowyland
Games like Snowyland include Celeste, Super Meat Boy, SANABI, VVVVVV, and Jump King. We matched them by the tags players give Snowyland on Steam (Precision Platformer, Pixel Graphics, Difficult, Snow, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Pixel Graphics · Difficult

Super Meat Boy
Shared: Precision Platformer · Difficult · Pixel Graphics

SANABI
Shared: Pixel Graphics · 2D Platformer · Indie

VVVVVV
Shared: Precision Platformer · Pixel Graphics · 2D Platformer

Jump King
Shared: Precision Platformer · Difficult · Pixel Graphics

Downwell
Shared: Precision Platformer · Pixel Graphics · Indie

Rain World
Shared: Difficult · Pixel Graphics · Atmospheric

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

The End Is Nigh
Shared: Precision Platformer · Difficult · Indie

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Platformer · Indie

Hollow Knight
Shared: Difficult · Platformer · Indie

Pizza Tower
Shared: 2D Platformer · Pixel Graphics · Indie

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

Webbed
Shared: Pixel Graphics · 2D Platformer · Puzzle Platformer

Bread & Fred
Shared: Pixel Graphics · Precision Platformer · Difficult

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

MO:Astray
Shared: Pixel Graphics · Indie · Puzzle Platformer

Ambidextro
Shared: Precision Platformer · Pixel Graphics · 2D Platformer

LIMBO
Shared: Puzzle Platformer · Indie · Platformer

The Messenger
Shared: Pixel Graphics · Platformer · Retro

Garbanzo Quest
Shared: Pixel Graphics · Precision Platformer · 2D Platformer

The Binding of Isaac: Rebirth
Shared: Difficult · Pixel Graphics · Indie

Skul: The Hero Slayer
Shared: Pixel Graphics · Indie · Difficult

Hollow Knight: Silksong
Shared: Difficult · Indie · Platformer