XMage - Magic, Another Game Engine is a game engine that allows up to 16 human or computer players to play Magic against each other for free. The goal of the MAGE project is to create the ultimate tool for playing Magic, casually or professionally. It is hoped that it will become a useful tool for tournament play testing.
Supported formats:
Two player matches
Multplayer matches (up to 10 players)
Commander (up to 10 players)
Sealed and draft tournaments (up to 16 players)
Cube formats

External links:
See also: