What is ManaBrew?

ManaBrew is an open-source Magic: The Gathering client and rules engine. It uses Forge as the rules reference instead of defining a new interpretation of the game, and ports Forge’s engine to Rust so it can run anywhere — including directly in your browser via WebAssembly.

Play in the browser

The full client runs as a static site at manabrew.app — no install required.

Desktop client

A native Tauri app for macOS and Windows, with installers published on GitHub releases.

Swappable engine

A Rust port of Forge’s game engine, verified card-by-card against Java Forge — or swap in the original Java Forge engine itself and play with full rules coverage today.

Multiplayer

A relay server powers online lobbies, with reconnection support for in-progress games.

Note

ManaBrew is unofficial fan software. It is not affiliated with, endorsed by, or sponsored by Wizards of the Coast LLC or by the Forge project. Card images are not shipped by this project.

Project status

ManaBrew is pre-release software, and its game engine is swappable. Two backends drive the same client today:

• Rust engine — the Forge port that runs everywhere, including in your browser. It plays a growing set of matchups, with card coverage expanding through parity testing against Java Forge.
• Java Forge engine — fully supported as a first-class way to play. Rooms hosted on a self-hosted node run games on the original, battle-tested Forge rules engine with its complete card coverage.

Next steps

Getting started Play in the browser, install the desktop app, or build from source.

Playing ManaBrew Deck building and import, AI games, multiplayer rooms, drafts, and the paper-play companion.

Self-hosting a Java room Run your own game room on the Java Forge engine, or host a full relay.

Contributing How the project is organized and where to start helping.