Games like Thunderman - Adventures in another realm
Games like Thunderman - Adventures in another realm include Webbed, Hollow Knight, Ori and the Will of the Wisps, SANABI, and Crimson Desert Enhanced. We matched them by the tags players give Thunderman - Adventures in another realm on Steam (Choose Your Own Adventure, Exploration, Runner, 2D Platformer, and PvE): closest matches first, and among equally close ones the better-known games.

Webbed
Shared: 2D Platformer · Exploration · Cute

Hollow Knight
Shared: Platformer · Exploration · 2D

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

SANABI
Shared: 2D Platformer · 2D · Story Rich

Crimson Desert Enhanced
Shared: Exploration · Choose Your Own Adventure · Action

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

Thank Goodness You're Here!
Shared: Exploration · 2D Platformer · Funny

Drill Bird
Shared: Exploration · 2D Platformer · PvE

Rain World
Shared: Exploration · Platformer · 2D

Öoo
Shared: 2D Platformer · Exploration · Platformer

Hoa
Shared: 2D Platformer · Exploration · Action-Adventure

Celeste
Shared: 2D Platformer · Platformer · 2D

Wuppo: Definitive Edition
Shared: Exploration · 2D Platformer · Platformer

Slime Rancher
Shared: Exploration · Cute · Adventure

Arzette: The Jewel of Faramore
Shared: Exploration · 2D Platformer · Platformer

STAR WARS Jedi: Fallen Order™
Shared: Action-Adventure · Exploration · Platformer

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

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Exploration · 2D

Pepper Grinder
Shared: 2D Platformer · Platformer · Arcade

Pipistrello and the Cursed Yoyo
Shared: Exploration · Action-Adventure · 2D Platformer

The Darkest Tales — Into the Nightmare
Shared: 2D Platformer · Platformer · Exploration

MARSUPILAMI - HOOBADVENTURE
Shared: Exploration · 2D Platformer · Platformer

DAVE THE DIVER
Shared: Exploration · Relaxing · Casual

Sonic Origins
Shared: 2D Platformer · Platformer · Action