Games like The Crimson Kingdom
Games like The Crimson Kingdom include Skul: The Hero Slayer, Dead Cells, Anomaly Agent, Hades, and SANABI. We matched them by the tags players give The Crimson Kingdom on Steam (Action Roguelike, Action, Side Scroller, 2D Platformer, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Roguelike

Dead Cells
Shared: Action Roguelike · Adventure · Roguelike

Anomaly Agent
Shared: Action Roguelike · Side Scroller · 2D Platformer

Hades
Shared: Action Roguelike · Hack and Slash · Action

SANABI
Shared: Action · 2D Platformer · Adventure

Rogue Legacy
Shared: Action Roguelike · Action · Roguelike

Hero Siege
Shared: Action Roguelike · Hack and Slash · Pixel Graphics

Vampire Survivors
Shared: Action Roguelike · 2D · Pixel Graphics

Have a Nice Death
Shared: Action Roguelike · Hack and Slash · Action

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Pixel Graphics

Blasphemous 2
Shared: Adventure · 2D Platformer · Side Scroller

Hades II
Shared: Action · Action Roguelike · Hack and Slash

Dungreed
Shared: Action Roguelike · Action · Roguelike

Wizard of Legend
Shared: Action Roguelike · Action · Roguelike

ICEY
Shared: Action · Side Scroller · Hack and Slash

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Pixel Graphics

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · 2D

Noita
Shared: Roguelike · Action Roguelike · Pixel Graphics

Lost Castle
Shared: Action Roguelike · Side Scroller · Hack and Slash

Children of Morta
Shared: Action Roguelike · Hack and Slash · Roguelike

Death Must Die
Shared: Action Roguelike · Action · Hack and Slash

Heroes of Hammerwatch II
Shared: Action Roguelike · Action · Roguelike

Halls of Torment
Shared: Action Roguelike · Action · Roguelike

Katana ZERO
Shared: Action · 2D Platformer · Pixel Graphics