What is 4 player chess?

4 player chess is a chess variant where four players compete simultaneously on a larger board. In QuadKings, players make simultaneous moves with fog of war mechanics and cooldown-based piece movement.

How is this chess variant different?

QuadKings features simultaneous moves (no turns), fog of war that hides parts of the board, and cooldown-based piece movement (1-20 seconds). It combines chess strategy with real-time strategy game mechanics.

Is QuadKings free to play?

Yes, QuadKings is 100% free to play. Core gameplay features are available to all players at no cost. The game is available on Steam, Android (APK), and Web browsers.

What platforms support 4 player chess?

QuadKings is available on Steam (Windows), Android (APK download), and Web browsers. iOS and macOS versions are coming soon. Cross-platform multiplayer is supported.

Chess with Fog of War and No Turns

4 players. Cooldowns instead of moves. Capture all enemy kings.

No checks and mates — only king hunting. Chess with RTS feeling.

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Players

Turns

∞

Strategy

100%

Chaos

GAME FEATURES

Strategy goes beyond the classic rules. Welcome to the ultimate four-player chess experience.

Simultaneous Moves

Players make their moves simultaneously. No turns, no waiting. Pure strategic chaos.

4-Player Mayhem

Four players battle simultaneously on a 14x14 board. Alliances form and break in seconds.

Fog of War

See only what your pieces can reach. Unknown threats lurk in the darkness.

Dynamic Cooldowns

Pawns move fast (3s), Rooks are moderate (6s), Queens and Kings need patience (10s).

Ranked Ladder

Compete for titles from Beginner to Grandmaster. FIDE-based rating system for 4 players.

Last Ruler Standing

Capture all enemy kings and remain the last ruler standing. Only one can claim victory.

Special Board Mechanics

Discover special tiles that speed up cooldowns by 50%. Position your pieces wisely to gain tactical advantages. The battlefield is ever-changing, and only the most adaptive players will survive.

CHESS PIECES

Master the unique cooldown system. Each piece has its own strategic timing.

⚔️ Classic Pieces

Pawn

⚡⚡⚡⚡⚡

Click to see moves →

Knight

🐎

Click to see moves →

Bishop

🔷

Click to see moves →

Rook

🏰

Click to see moves →

Queen

👑

Click to see moves →

King

👑💎

Click to see moves →

🔥 Hybrid Pieces (GM LEVEL)

Advanced pieces with combined abilities and unique powers

Marshal

"Flying Fortress"

Rook + Knight

TIER 1

Click to see moves →

Sentinel

"Diagonal Rider"

Bishop + Knight

TIER 1

Click to see moves →

Warlord

"Mobile Commander"

Rook + King

TIER 1

Click to see moves →

Paladin

"Holy Defender"

Bishop + King

TIER 1

Click to see moves →

Centaur

"Mobile Leader"

King + Knight

TIER 1

Click to see moves →

Lancer

"Heavy Cavalry"

Rook + King + Knight

TIER 2

Click to see moves →

Archer

"Elite Shooter"

Bishop + King + Knight

TIER 2

Click to see moves →

Amazon

"War Goddess"

Rook + Bishop + Knight

TIER 3

Click to see moves →

⚡ Master the Cooldown System

Balance speed and power. Fast pieces like Pawns (1) give you tactical flexibility, while powerful pieces like Queens (9) and Kings (20) require strategic patience. Hybrid pieces unlock at higher levels, combining abilities for devastating combos!

TECH STACK

Built with cutting-edge technologies for seamless cross-platform multiplayer experience

Client

KorGE ↗Kotlin

Multiplatform Game Engine

Kotlin Multiplatform ↗JVM/JS/Native

Cross-platform development

Ktor Client ↗Async

HTTP & WebSocket client

Shared

Common Kotlin Code ↗Multiplatform

Shared game logic & models

Kotlinx Serialization ↗JSON

Data serialization

Server

Ktor Server ↗JVM

Async Kotlin backend framework

WebSocket ↗Real-time

Real-time game synchronization

PostgreSQL / H2 ↗SQL

Database for persistence

Infrastructure

Cloudflare ↗Global

CDN & DNS

Render / Fly.io ↗Cloud

Server hosting

Steam ↗Platform

PC game distribution

🏗️ Architecture

📱

Client

KorGE Multiplatform

Windows • Android • iOS • Web

🔗

Shared

Common Kotlin Code

Game Logic • Models • Utils

⚡

Server

Ktor Backend

REST API • WebSocket • Database

🎮 Supported Platforms

🪟

Windows

Available

🌐

Web Browser

Available

🤖

Android

Available

🍎

iOS

Coming Soon

🍎

macOS

Planned

🐧

Linux

Planned

🚀 Why Kotlin Multiplatform?

One codebase, six platforms. KorGE + Kotlin Multiplatform allows us to develop once and deploy everywhere - from Windows to mobile to web browsers. This means faster updates, consistent gameplay, and seamless cross-platform multiplayer for all players!