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Two glowing foundries beneath a violet moon

A tabletop strategy duel

Moonstone Foundry

Mine the quarry, build your forge, and race your rival to 15 Renown or 3 Town Commissions.

Tabletop prototype

Moonstone Foundry

Shared materials

The Quarry

Choose up to 3 stones in a straight line.

Your gems
Build your engine

The Blueprints

Printed cost + bonus · Total gems before → after

Private blueprints

Reserved

Win with three

Town Commissions

Counts show built / required. After each build, you claim the first commission you qualify for.

Start a duel

Choose your opponent

Online matches save after each turn. Return in the same browser to keep your seat.

Permanent workshop bonuses

My engine

Recent moves

Foundry Ledger

    The maker’s handbook

    How to play

    Take one action each turn. Win immediately with 15 Renown or 3 Town Commissions.

    1. Gather. Take 1–3 touching gems in a straight line across, down, or diagonally. Take three different colors or a pair, which may match. Affected rows slide left, and their previews show the next gem to enter.
    2. Build. Tap a market or reserved blueprint to buy it. Workshops and Guildworks give permanent discounts. Each green +N is a color bonus from buildings you own. Masterpieces earn more Renown. Each Spark substitutes for one gem of any color.
    3. Reserve. Take a face-up blueprint or draw a sealed card from a deck. You get one Spark if the shared supply has one available, even if you already hold Sparks. You can hold up to three private blueprints. Building one opens a slot.

    Ten-token limit. Your gems and Sparks count together. If you go over, choose which tokens to return before your turn ends. Permanent Workshop discounts and reserved blueprints take up no token space.

    Town Commissions. The numbers on these cards count Workshops and Guildworks you’ve built in each color. After a build, you claim at most one eligible commission, starting from the left. The first maker to claim three wins.

    Both makers start with empty trays. Computer matches save in this browser. Online matches save after each turn and stay available for 30 days after the last move. Return in the same browser to resume your seat.

    Ten-token limit

    Return excess tokens

    Reset the table

    Start a new match?

    The current match will be replaced. The opening player alternates with every rematch.