This is a really cool idea, glad to see more card stuff! I love the way you have to try and strategize placement position. And really cool touch with the music, it seems like it switches mood depending on who is winning.
I'm not sure if it's just my computer but I had a hard time actually reading the text on the cards sometimes-- it might be nice if there was a way to zoom in or click on them to view a larger popup of the card.