Games like Castle Cardians
Games like Castle Cardians include Balatro, Slay the Spire 2, Slay the Spire, Loop Hero, and Vampire Crawlers: The Turbo Wildcard from Vampire Survivors. We matched them by the tags players give Castle Cardians on Steam (Strategy, Deckbuilding, Casual, Card Game, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Card Game · Deckbuilding · Strategy

Slay the Spire 2
Shared: Deckbuilding · Card Game · Strategy

Slay the Spire
Shared: Card Game · Deckbuilding · Strategy

Loop Hero
Shared: Deckbuilding · Pixel Graphics · Roguelike

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Deckbuilding · Strategy · Card Battler

Inscryption
Shared: Deckbuilding · Card Game · Card Battler

Ratropolis
Shared: Deckbuilding · Strategy · Card Game

Ballionaire
Shared: Casual · Deckbuilding · Strategy

RACCOIN: Coin Pusher Roguelike
Shared: Strategy · Deckbuilding · Roguelike

Dungeons & Degenerate Gamblers
Shared: Strategy · Deckbuilding · Card Game

9 Kings
Shared: Strategy · Deckbuilding · Card Game

Magic: The Gathering Arena
Shared: Strategy · Card Game · Deckbuilding

Slots & Daggers
Shared: Strategy · Casual · Roguelike

Heretic's Fork
Shared: Deckbuilding · Strategy · Card Game

Luck be a Landlord
Shared: Deckbuilding · Strategy · Pixel Graphics

DICEOMANCER
Shared: Strategy · Card Game · Deckbuilding

Across the Obelisk
Shared: Casual · Card Game · Deckbuilding

Animation Throwdown: The Quest for Cards
Shared: Strategy · Card Game · Card Battler

Die in the Dungeon
Shared: Strategy · Deckbuilding · Roguelike

Plants vs. Zombies GOTY Edition
Shared: Strategy · Casual · Tower Defense

Peglin
Shared: Deckbuilding · Strategy · Roguelike

Dicey Dungeons
Shared: Deckbuilding · Strategy · Card Battler

Yu-Gi-Oh! Legacy of the Duelist
Shared: Deckbuilding · Card Game · Strategy

Griftlands
Shared: Deckbuilding · Card Battler · Strategy