Early accesscustom cards in real matches

Muster — a multiplayer deck-building card game you play in the browser

A deckbuilding game where you can create custom cards

The Idea

+$2, and each rival sheds their hand down to three.

The Council
Playable Card
Raid
Raid artwork

+$2. Each other player discards down to 3.

action, attack4

No account needed.

Step into the table

Build the deck while you play

Start with a small deck, buy better cards, draw them later, and build your strategy one turn at a time.

It's a card game where you build your own deck as you play. Buy cards, draw them later, and turn a weak starting deck into a machine.

I
$
Draw$$Raid6

Start with a small deck and buy stronger cards.

II
Deck
$Act
Hand

Add money, actions, attacks, defense, and points.

III
631
WIN

When the game ends, the player with the most points wins.

Each turnPlay actionsCount moneyBuy a card

A two-minute interactive tutorial walks you through your first game.

The council

Turn an idea into a playable card

Describe a card in plain English. Muster drafts it, tests it, gives it art, and gets it ready for real matches.

Card Creation

From idea to playable card.

Describe the card you want. Muster drafts the design, tests the rules, tunes the cost, paints the art, and prepares it for multiplayer games.

Rules Check

Turns your idea into card text the game engine can run.

Balance Check

Looks for loops, locks, and cards that are too strong or too weak.

Bot Tests

Runs trial games to see how the card behaves in play.

Cost Tuning

Checks cost, tempo, attacks, and payoff before the card ships.

Art Pass

Gives approved cards a name, art, and finished card face.

The Draft+2 Cards. Everyone else gains Rot.
Revise
Repair
Release
Fresh from the forge

Cards the community made

Every one of these started as a sentence someone typed. Browse the full compendium of base and custom cards.

Actual game screen

Play in the browser

Live multiplayer rooms, bots, desktop and mobile layouts, and cards you can actually read.

Muster game running on desktop — lineup of cards, hand, scoreboard.
Muster game on mobile — touch-friendly hand and supply.
Play modes

Choose a table

Every route points toward playing quickly: solo practice, friends, open tables, or ranked games.

Friends

Invite friends and try your custom cards in private games.

Public games

Join an open table and play against the community.

Bots

Practice against bots or test new cards before taking them online.

Ranked

Play competitive games and track your rating.

Playing costs nothing.

Creating a card costs one Blank.

Games, lobbies, bots, and community cards cost nothing. Blanks pay for card making, rules checks, art, testing, and upkeep.

Make a card. Play a match. See what breaks.

No account needed.