Games like Tootum
Games like Tootum include Celeste, Prince of Persia The Lost Crown, SANABI, Hogwarts Legacy, and VVVVVV. We matched them by the tags players give Tootum on Steam (Metroidvania, Adventure, 2D Platformer, Precision Platformer, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Pixel Graphics · 2D Platformer

Prince of Persia The Lost Crown
Shared: Metroidvania · 2D Platformer · Adventure

SANABI
Shared: Pixel Graphics · 2D Platformer · Adventure

Hogwarts Legacy
Shared: Adventure · Magic · Fantasy

VVVVVV
Shared: Precision Platformer · Pixel Graphics · 2D Platformer

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · 2D Platformer · Pixel Graphics

Hollow Knight
Shared: Metroidvania · Adventure · Exploration

Ori and the Will of the Wisps
Shared: Metroidvania · Adventure · Singleplayer

Hollow Knight: Silksong
Shared: Metroidvania · Adventure · Exploration

F.I.S.T.: Forged In Shadow Torch
Shared: Metroidvania · Adventure · 2D Platformer

Webbed
Shared: 2D Platformer · Pixel Graphics · Exploration

Owlboy
Shared: Adventure · Metroidvania · Pixel Graphics

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

Blasphemous 2
Shared: Metroidvania · Adventure · 2D Platformer

Dead Cells
Shared: Adventure · Metroidvania · Pixel Graphics

Monster Sanctuary
Shared: Metroidvania · Pixel Graphics · Adventure

Haiku, the Robot
Shared: Metroidvania · Adventure · Pixel Graphics

Leap Year
Shared: 2D Platformer · Precision Platformer · Metroidvania

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

Gato Roboto
Shared: Metroidvania · Adventure · Pixel Graphics

ANIMAL WELL
Shared: Metroidvania · Pixel Graphics · Exploration

Axiom Verge
Shared: Metroidvania · Pixel Graphics · Adventure

The Messenger
Shared: Metroidvania · Pixel Graphics · 2D Platformer

Lone Fungus
Shared: Adventure · 2D Platformer · Pixel Graphics