Games like GravNewton
Games like GravNewton include Celeste, Super Meat Boy, Geometry Dash, Jump King, and Pizza Tower. We matched them by the tags players give GravNewton on Steam (Precision Platformer, Difficult, Platformer, 2D, and Action): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · Platformer

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

Jump King
Shared: Difficult · Precision Platformer · Platformer

Pizza Tower
Shared: Platformer · Cartoony · Indie

Hollow Knight
Shared: Platformer · Difficult · 2D

Downwell
Shared: Precision Platformer · Platformer · Difficult

VVVVVV
Shared: Precision Platformer · Platformer · Difficult

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

Cuphead
Shared: Difficult · Platformer · 2D

Katana ZERO
Shared: Action · Platformer · 2D

SANABI
Shared: Action · 2D · Singleplayer

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

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

Super Meat Boy Forever
Shared: Difficult · Precision Platformer · Platformer

Kaze and the Wild Masks
Shared: 2D · Precision Platformer · Cartoony

The Binding of Isaac: Rebirth
Shared: Difficult · Indie · Replay Value

Getting Over It with Bennett Foddy
Shared: Difficult · Platformer · Singleplayer

Pogostuck: Rage With Your Friends
Shared: Difficult · Precision Platformer · Platformer

A Difficult Game About Climbing
Shared: Difficult · Precision Platformer · Platformer

Nine Sols
Shared: Difficult · 2D · Platformer

Shovel Knight: Treasure Trove
Shared: Platformer · 2D · Difficult

Electronic Super Joy
Shared: Platformer · Difficult · Precision Platformer

Spelunky
Shared: Platformer · Difficult · 2D