Games like Castle Morihisa
Games like Castle Morihisa include Slay the Spire, Balatro, Slay the Spire 2, Wildfrost, and Monster Train. We matched them by the tags players give Castle Morihisa on Steam (Roguelike Deckbuilder, Card Battler, Dungeon Crawler, Turn-Based, and Replay Value): closest matches first, and among equally close ones the better-known games.

Slay the Spire
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Balatro
Shared: Roguelike Deckbuilder · Card Game · Roguelike

Slay the Spire 2
Shared: Roguelike Deckbuilder · Card Game · Roguelike

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Monster Train
Shared: Card Battler · Card Game · Turn-Based Tactics

Dicey Dungeons
Shared: Roguelike Deckbuilder · Card Battler · Turn-Based

Die in the Dungeon
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Dice & Fold
Shared: Card Battler · Roguelike Deckbuilder · Dungeon Crawler

9 Kings
Shared: Roguelike Deckbuilder · Card Game · Roguelike

LONESTAR
Shared: Card Battler · Roguelike Deckbuilder · Roguelike

Astrea: Six-Sided Oracles
Shared: Roguelike Deckbuilder · Card Battler · Turn-Based

Banners of Ruin
Shared: Roguelike Deckbuilder · Card Battler · Turn-Based

Yao-Guai Hunter
Shared: Roguelike Deckbuilder · Card Battler · Replay Value

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Card Battler · Dungeon Crawler · Card Game

Shogun Showdown
Shared: Replay Value · Turn-Based · Roguelike Deckbuilder

Black Jacket
Shared: Roguelike Deckbuilder · Card Game · Turn-Based

Deathless. The Hero Quest
Shared: Roguelike Deckbuilder · Replay Value · Card Battler

The Binding of Isaac: Rebirth
Shared: Replay Value · Dungeon Crawler · Roguelike

Dungeons & Degenerate Gamblers
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Darkest Dungeon®
Shared: Dungeon Crawler · Turn-Based · Roguelike

Roguebook
Shared: Card Game · Turn-Based · Card Battler

Trials of Fire
Shared: Card Battler · Dungeon Crawler · Roguelike Deckbuilder

As We Descend
Shared: Roguelike Deckbuilder · Card Battler · Card Game

Gordian Quest
Shared: Card Battler · Card Game · Replay Value