Games like Arnold
Games like Arnold include Downwell, BlazBlue Entropy Effect, SANABI, I wanna be the Creator, and Ori and the Will of the Wisps. We matched them by the tags players give Arnold on Steam (Action, Puzzle, Experimental, Arcade, and Platformer): closest matches first, and among equally close ones the better-known games.
Downwell
Shared: Action · Platformer · Arcade
BlazBlue Entropy Effect
Shared: Action · Platformer · Action-Adventure
SANABI
Shared: Action · 2D Platformer · Action-Adventure
I wanna be the Creator
Shared: Action · Platformer · Puzzle
Ori and the Will of the Wisps
Shared: Action · Platformer · Puzzle
Portal 2
Shared: Puzzle · Platformer · Action
Celeste
Shared: Platformer · Precision Platformer · 2D Platformer
Webbed
Shared: 2D Platformer · Platformer · Action
Darwin's Paradox!
Shared: Action · Puzzle · Platformer
Rogue Legacy 2
Shared: Action · Arcade · Platformer
Skul: The Hero Slayer
Shared: Action · Platformer · Action Roguelike
BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up
Sonic Origins
Shared: Action · 2D Platformer · Platformer
Öoo
Shared: Puzzle · 2D Platformer · Platformer
Sonic Superstars
Shared: Action · Platformer · 2D Platformer
Planet of Lana
Shared: Action · Puzzle · 2D Platformer
Super Mombo Quest
Shared: Action · Arcade · Action-Adventure
Leap Year
Shared: Puzzle · 2D Platformer · Platformer
Katana ZERO
Shared: Action · Platformer · 2D Platformer
Mina the Hollower
Shared: Action-Adventure · Platformer · 2D Platformer
Airscape - The Fall of Gravity
Shared: Shoot 'Em Up · Platformer · Arcade
Super Meat Boy
Shared: Platformer · 2D Platformer · Precision Platformer
Out There Somewhere
Shared: Puzzle · Platformer · Action
Pepper Grinder
Shared: Arcade · Platformer · 2D Platformer