Games like Gooing Up!
Games like Gooing Up! include Celeste, Super Meat Boy, Geometry Dash, VVVVVV, and SANABI. We matched them by the tags players give Gooing Up! on Steam (Precision Platformer, Difficult, Physics, Nonlinear, and 2D): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · Pixel Graphics

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

VVVVVV
Shared: Precision Platformer · Pixel Graphics · Difficult

SANABI
Shared: Pixel Graphics · 2D · 2D Platformer

Webbed
Shared: Physics · Pixel Graphics · Cute

Downwell
Shared: Precision Platformer · Pixel Graphics · Difficult

Jump King
Shared: Difficult · Precision Platformer · Pixel Graphics

Rain World
Shared: Difficult · Pixel Graphics · 2D

Noita
Shared: Physics · Difficult · Pixel Graphics

Hollow Knight
Shared: Difficult · 2D · Platformer

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · 2D · Platformer

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

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

SUPER CHICKEN JUMPER
Shared: Difficult · 2D · Pixel Graphics

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

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

Skul: The Hero Slayer
Shared: Pixel Graphics · 2D · Difficult

The Messenger
Shared: Pixel Graphics · 2D · Platformer

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

Windswept
Shared: Difficult · Precision Platformer · 2D Platformer

UFO 50
Shared: Pixel Graphics · 2D · Difficult

Sonic Origins
Shared: 2D Platformer · Pixel Graphics · Platformer

Alex Kidd in Miracle World DX
Shared: Precision Platformer · Difficult · 2D