Siege is a free-to-play competitive card game set in a medieval world of stone walls, cavalry charges, and hidden traps. Unlike most card games, both players act at the same time — no waiting, no downtime, just constant tactical pressure from start to finish.

Destroy Their Walls. Defend Your Own.

The objective is simple: destroy 3 of your opponent's walls before they destroy yours. Every wall that falls removes an entire column from that side of the battlefield — the board shrinks, space tightens, and the tension builds with every turn.

Simultaneous Placement

Every turn follows five phases:

1. Main Phase — Choose a resource (Gold or Wood) to improve for future turns
   
2. Placement Phase — Secretly spend resources to place cards on the battlefield
   
3. Move Phase — Units advance toward the enemy based on their type
   
4. Battle Phase — Cards in range deal damage and fight to the death
   
5. End Phase — Status effects tick, walls take damage, destruction is applied

Both players reveal their placements at the same time. Reading your opponent, predicting their moves, and adapting mid-battle is the skill that separates good players from great ones.

Six Unit Types

• Brawlers — durable melee fighters that hold the front line
  
• Archers — ranged units that target back-row cards before they can act
  
• Cavalry — fast movers that pressure walls early
  
• Supports — utility cards with powerful abilities: heal, boost resources, draw cards
  
• Traps — placed secretly, triggered when the enemy steps in
  
• Spies — placed on the enemy half of the board, disrupting plans from behind

Deep Ability System

Cards carry activated and passive abilities that fire on placement, during combat, or at end of phase. Over 25 distinct ability types:

• Fortify a column to protect a wall from damage
  
• Poison enemy units with traps they never saw coming
  
• Silence a support before it buffs the entire enemy row
  
• Sabotage your opponent's resources mid-game
  
• Scout the enemy hand before the placement phase begins

Four Pre-Built Decks — Jump In Immediately

• Defense Bastion — walls of archers and layered traps designed to outlast any aggression
  
• Aggro Assault — cavalry and brawlers that rush walls before the opponent can set up
  
• Support Engine — resource acceleration and card draw that outvalue opponents in long games
  
• Trap Ambush — hidden traps and sabotage that punish predictable play

Build Your Own Deck

Use the full Deck Editor to craft your own 40-card strategy from the complete card catalog. Experiment with unit combinations, ability synergies, and resource curves — then take it online.

Play Online or vs AI

• Online multiplayer — challenge players worldwide via lobby matchmaking
  
• AI opponent — three difficulty levels (Easy, Medium, Hard)
  
• Pause menu — audio controls and forfeit available mid-match

100% Free

Siege is completely free to play. All cards, all decks, all game modes — available to every player at no cost.