Games like Return to Dark Castle
Games like Return to Dark Castle include Celeste, Super Meat Boy, SANABI, VVVVVV, and Katana ZERO. We matched them by the tags players give Return to Dark Castle on Steam (Action, Platformer, Puzzle, 2D Platformer, and Indie): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · Indie

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

SANABI
Shared: Action · 2D Platformer · Pixel Graphics

VVVVVV
Shared: Platformer · Precision Platformer · 2D Platformer

Katana ZERO
Shared: Action · Platformer · Pixel Graphics

Out There Somewhere
Shared: Platformer · Puzzle · Indie

LIMBO
Shared: Puzzle · Platformer · Indie

Webbed
Shared: 2D Platformer · Platformer · Puzzle Platformer

Pizza Tower
Shared: 2D Platformer · Indie · Platformer

Defy Gravity Extended
Shared: Platformer · Puzzle · Indie

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

Downwell
Shared: Platformer · Precision Platformer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Action · Indie

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

Skul: The Hero Slayer
Shared: Action · Indie · Platformer

Braid
Shared: Puzzle · 2D Platformer · Platformer

ElecHead
Shared: Platformer · Puzzle · Action

The Messenger
Shared: Platformer · Action · Indie

Jump King
Shared: Indie · Precision Platformer · Platformer

Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer

Gravity Circuit
Shared: Action · Platformer · Indie

ANIMAL WELL
Shared: Puzzle · Platformer · Puzzle Platformer

Broforce
Shared: Action · Platformer · Pixel Graphics

FEZ
Shared: Platformer · Puzzle · Indie