If you’re not familiar with Tetra Master, it’s the card based mini game from Final Fantasy IX. -> http://en.wikipedia.org/wiki/Minigames_of_Final_Fantasy

Changes:

-Added saving/loading of player card collection and stats
-Added card collection screen
-Added player experience and levels
-Added individual card stats(experience, X,A types)
-Changed to predefined opponents for each player level rather than random card selection
-Replaced sprite based menus and text with standard console based text
-Added a gameplay tutorial

Discussion: http://forum.gbadev.org/viewtopic.php?t=15151

http://www.codinginthedark.com/?p=58