Well, it's not really a Trading Card GAME, but it does have to do with trading cards. Basically, you cut a piece of cardstock into 2.5/3.5 inches (the size of most trading cards), and you put your own art on it. It can be a collage, or just about anything... Trading is a main part of it. If you know someone else who trades them, you can trade the f2f, or through the mail. There are only a few rules to it. 1) All cards have to be original artwork, 2) All cards must be at most 2.5 with, 3.5 hight (like a regular trading card), 3) You can NOT sell them!!! You have to either trade them, or give them away.