Wagic

Wagic is a heroic-Fantasy card Game.
In Wagic, the player builds a deck of cards representing its army (creatures and spells), and fights against the AI. As the players win battles, they earn credits that allow them to improve their collection of cards.
Wagic uses the JGE++ Library, and is open source.
As of 2009/11, there are more than 3500 cards available in the game.
Wagic is customizable, some Themes and Mods can be found on the official website.