Games like Happy Sawland
Games like Happy Sawland include Celeste, Super Meat Boy, SANABI, Geometry Dash, and Bloody Trapland. We matched them by the tags players give Happy Sawland on Steam (2D Platformer, Online Co-Op, Multiplayer, Pixel Graphics, and Character Customization): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Pixel Graphics · Difficult · 2D Platformer

Super Meat Boy
Shared: 2D Platformer · Difficult · Pixel Graphics

SANABI
Shared: Pixel Graphics · 2D Platformer · Singleplayer

Geometry Dash
Shared: Difficult · Singleplayer · Character Customization

Bloody Trapland
Shared: Online Co-Op · Multiplayer · Singleplayer

Brawlhalla
Shared: Multiplayer · 2D Platformer · Online Co-Op

Bloons TD 6
Shared: Multiplayer · Online Co-Op · Singleplayer

Terraria
Shared: Multiplayer · Pixel Graphics · Adventure

VVVVVV
Shared: Pixel Graphics · 2D Platformer · Difficult

PEAK
Shared: Online Co-Op · Multiplayer · Adventure

Bread & Fred
Shared: 2D Platformer · Pixel Graphics · Multiplayer

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

The Escapists 2
Shared: Multiplayer · Online Co-Op · Pixel Graphics

Don't Starve Together
Shared: Multiplayer · Online Co-Op · Adventure

Need for Speed™ Unbound
Shared: Multiplayer · Character Customization · Singleplayer

EA SPORTS FC™ 26
Shared: Multiplayer · Online Co-Op · Controller

Downwell
Shared: Pixel Graphics · 2D Platformer · Difficult

Need for Speed™ Heat
Shared: Multiplayer · Singleplayer · Online Co-Op

Jump King
Shared: Difficult · Pixel Graphics · Adventure

Monster Hunter Wilds
Shared: Multiplayer · Online Co-Op · Character Customization

Rain World
Shared: Difficult · Pixel Graphics · 2D Platformer

Monster Hunter: World
Shared: Multiplayer · Character Customization · Adventure

Himno
Shared: Pixel Graphics · Multiplayer · 2D Platformer

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