Top 3 Java magic-the-gathering Projects

mage

117 1,757 10.0 Java

Magic Another Game Engine (by magefree)

Project mention: Open source rules engine for Magic: The Gathering | news.ycombinator.com | 2023-12-14

forge

32 806 10.0 Java

An unofficial rules engine for the world's greatest card game. (by Card-Forge)

Project mention: Shattered Pixel Dungeon is an open-source traditional roguelike dungeon crawler | news.ycombinator.com | 2024-03-20

If you like Magic The Gathering card playing game, avoid Forge (Desktop + Android) because it is open source (made in Java) and it has all the cards, gameplays, you can build your deck or choose from a huge list of ready-made ones and play against the AI and online up to 4 players in the same game I believe.
https://github.com/Card-Forge/forge

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deckscraper

4 18 0.0 Java

Magic the Gathering (MTG) reverse deck search tool.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).