X(na)yne

So, where are we? Well, we're using XNA. It's greatly simplified a lot of the "housekeeping" (Dave's favorite development word) that we were dealing with when working with SDL. Unfortunately though, this limits us to Windows/Xbox 360 development, cutting out Mac and Linux.
We break the game up into a few sections, the Puzzle and Queue regions where the puzzle game is played. The hand region where the cards are managed and interacted with by the player. And lastly the battle region, where the battle "takes place". Ultimately the Puzzle region enables the hand region to activate a card, which causes events to take place in the battle region. Here's a screen shot of a very rough version of the game.