Castle Cardians

Real-time deckbuilding and tower defense against waves of invading monsters

风宇冲 · Released Oct 8, 2021 · Early Access

As of Oct 28, 2026: Early Access, no updates for over a year

Reviews: Mostly Positive; 74% of 119
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 2 years ago; Mar 6, 2024
Minimum PC: 512MB Ram; 4 GB RAM · 0.8 GB disk; Full requirements

What is Castle Cardians?

Castle Cardians is a single-player, 2D strategy game set on a continent invaded by the Dark Legion. Across mission-based levels, you gather resources, build your settlement, recruit troops, and cast spells to repel attacks.

For you if...

+you enjoy experimenting with cards, relics, and enchantments

Not for you if...

−you prefer turn-based planning over managing battles in real time

What players say

74% of 119 reviews are positive

Players complain about difficulty spikes and getting stuck repeating the same levels.

Screenshots and trailer

Castle Cardians system requirements

Minimum: 512MB Ram, 4 GB RAM, 0.8 GB of disk space.

As published by the developer.

Can my PC run Castle Cardians?

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Minimum

OS: Window 7, 8, 10 (64-bits)
Processor: 2.4 Ghz
Graphics: 512MB Video Ram
Memory: 4 GB RAM
Storage: 800 MB available space
DirectX: Version 10

Does Castle Cardians have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Castle Cardians run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

Sometimes shows mouse, keyboard or non-Deck controller icons
Some text entry requires manually opening the on-screen keyboard
Some in-game text is small and may be hard to read
All functionality is accessible with the default controller configuration
Default graphics settings perform well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 15
Steam features: Cloud saves, Family Sharing
Languages: Text only: Simplified Chinese, English, French, German, Russian, Spanish - Latin America.

Does Castle Cardians use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam