Games like Mawthorne
Games like Mawthorne include Hollow Knight, Ori and the Will of the Wisps, Gato Roboto, Shovel Knight: Treasure Trove, and Axiom Verge. We matched them by the tags players give Mawthorne on Steam (Action, Adventure, Platformer, Metroidvania, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · Metroidvania · Adventure

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

Gato Roboto
Shared: Action · Metroidvania · Adventure

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · Retro

Axiom Verge
Shared: Metroidvania · Platformer · Action

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · Indie

The Messenger
Shared: Platformer · Metroidvania · Retro

Dead Cells
Shared: Adventure · Metroidvania · Pixel Graphics

SANABI
Shared: Action · Pixel Graphics · Adventure

Bloodstained: Curse of the Moon
Shared: Action · Platformer · Pixel Graphics

Hollow Knight: Silksong
Shared: Metroidvania · Platformer · Indie

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

Blasphemous
Shared: Metroidvania · Pixel Graphics · Action

Out There Somewhere
Shared: Platformer · Adventure · Pixel Graphics

F.I.S.T.: Forged In Shadow Torch
Shared: Action · Platformer · Metroidvania

CARRION
Shared: Action · Metroidvania · Pixel Graphics

Rogue Legacy 2
Shared: Action · Platformer · Metroidvania

Environmental Station Alpha
Shared: Adventure · Metroidvania · Pixel Graphics

Iconoclasts
Shared: Action · Metroidvania · Pixel Graphics

Grand Theft Auto V Legacy
Shared: Action · Open World · Adventure

Owlboy
Shared: Adventure · Pixel Graphics · Platformer

Rogue Legacy
Shared: Platformer · Action · Metroidvania

Angry Video Game Nerd Adventures
Shared: Action · Platformer · Adventure

Chasm
Shared: Metroidvania · Adventure · Action