Games like UP UP UP UP
Games like UP UP UP UP include Hollow Knight, Celeste, Hollow Knight: Silksong, Sonic Origins, and Downwell. We matched them by the tags players give UP UP UP UP on Steam (Casual, Action, Adventure, Arcade, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · Souls-like · Adventure

Celeste
Shared: Precision Platformer · Platformer · 2D Platformer

Hollow Knight: Silksong
Shared: Platformer · Souls-like · Adventure

Sonic Origins
Shared: Action · Adventure · 2D Platformer

Downwell
Shared: Precision Platformer · Platformer · Arcade

Rogue Legacy 2
Shared: Arcade · Action · Platformer

Webbed
Shared: 2D Platformer · Exploration · Platformer

Ori and the Will of the Wisps
Shared: Platformer · Action · Adventure

SANABI
Shared: Action · Adventure · 2D Platformer

Pikuniku
Shared: Casual · Adventure · Action

Thank Goodness You're Here!
Shared: Adventure · Casual · Exploration

BEEP
Shared: Adventure · Platformer · Action

Sonic Superstars
Shared: Action · Casual · Adventure

Twin Shot Deluxe
Shared: Casual · Action · Arcade

Airscape - The Fall of Gravity
Shared: Casual · Platformer · Exploration

Dust: An Elysian Tail
Shared: Action · Platformer · Adventure

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

VVVVVV
Shared: Platformer · Precision Platformer · 2D Platformer

Slime Rancher
Shared: Adventure · Exploration · Casual

Super Fancy Pants Adventure
Shared: Action · Adventure · Casual

Pizza Tower
Shared: 2D Platformer · Platformer · Action

Nine Sols
Shared: Action · Platformer · Souls-like

Oozi: Earth Adventure
Shared: Casual · Platformer · 2D Platformer

Planet of Lana
Shared: Action · 2D Platformer · Adventure