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Kingdom of Cards

Kingdom of Cards

From cropland to forest, from academy to conqueror's guild, expand territory of your kingdom. As the kingdom grows, crises will quietly arise. No worries: prepare to use the resource cards to train a group of powerful guardians to eliminate enemies and protect your kingdom.

Released Sep 22, 2025 Developer Rubber Duck Games Publisher Gamirror Games Platforms Windows StrategyRPGCard GameBoard GameStrategy RPG
View on Steam ↗ $11.99 (US · as of 2026-05-16)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

77.0%positive100 reviews
Not recommended · 0 found this helpful

“I tried to like this, I really did. But the game is just bad. The core loop isn't fun and that's not helped by the fact that it has several game-breaking bugs that, looking at the steam forum, were reported over a year ago and still aren't fixed. Not suprising given that the…”

— a player, Steam review · 7 hrs played
Not recommended · 0 found this helpful

“stuff needed is behind unlocks, so it seems you have to loose your runs in order to progress.”

— a player, Steam review · 1 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

46achievements
17.2%median completion
0.6%rarest: Legend of the Realm
96.0% of players 80.5% of players 80.2% of players 74.6% of players 72.4% of players 71.1% of players 56.9% of players 56.1% of players 51.7% of players 50.1% of players 44.4% of players 41.3% of players 41.0% of players 39.3% of players 38.3% of players 37.2% of players 36.3% of players 35.4% of players 30.6% of players 28.7% of players 26.0% of players 25.9% of players 24.8% of players 17.2% of players 14.4% of players 12.6% of players 10.2% of players 7.9% of players 7.7% of players 5.2% of players 4.2% of players 3.1% of players 2.8% of players 2.8% of players 2.6% of players 1.8% of players 1.7% of players 1.6% of players 1.3% of players 1.2% of players 1.1% of players 1.1% of players 1.0% of players 0.7% of players 0.6% of players 0.6% of players 96.0% 0% most earned rarest
Almost everyone has
96.0%Getting Started — Build your first terminal
80.5%Invasion Repelled — Overcome an invasion
80.2%A Modest Investment — Buy a card in the shop for the first time
Rarest badges of honor
0.6%Legend of the Realm — Hidden achievement
0.6%Know Thy Enemy — Discover all enemy cards
0.7%Card Mastermind — Discover all available cards in the game

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Oct 09, 2025
Save 10% on the Kingdom of Cards & Kingdom Rush 5: Alliance Bundle!

From mastering the art of card fusion and strategy to defending your realm in epic tower defense battles, this bundle combines two unique experiences into one legendary journey. Kingdom of Cards and K

Oct 08, 2025
V1.0.4 Patch Note

Fixed an issue where the game could get stuck after defeating Belzerra in Boss Rush mode.

Oct 07, 2025
V1.0.3 Patch Note

Fixed an issue where the game would get stuck if you opened the Wandering Merchant’s shop while a combat was in progress.

Sep 30, 2025
V1.0.2 Patch Note

Fixed an issue where frozen units stopped attacking, causing the combat to get stuck.

Sep 29, 2025
V1.0.1 Patch Note

Fixed an issue where Robin Hood’s damage did not trigger correctly Fixed a crash caused by pausing the game with the space bar Fixed a bug that allowed players to build two identical buildings at the

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

GenresCasual, Indie, RPG, Strategy
Player tagsStrategy · RPG · Card Game · Board Game · Strategy RPG · Rogue-like · Rogue-lite · 2D · Top-Down · Early Access · Pixel Graphics · Indie (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Steam Cloud · Family Sharing
LanguagesEnglish, Simplified Chinese, Traditional Chinese, German, Portuguese - Brazil, Spanish - Latin America, Japanese
Achievements46
Official sitehttp://rubberduck.games/
Minimum system requirements (PC)

Minimum: OS *: Windows 7 or higher Processor: Intel Core i5 Memory: 2 GB RAM Graphics: NVIDIA GeForce GTS 450 / ATI Radeon HD 5750 Storage: 2 GB available space