What could be better than playing games all weekend? Bring some old games you no longer like and walking away with some new titles. We'll help you do just that with the Tennessee Game Days Math Trade. What is a math trade? Basically, you submit games you are willing to trade and then a preference list of what games you'd accept for what titles. A computer program takes that list and finds those kinds of trades that are hard for humans to see (A trades to B, B trades to C, C trades to A). It's easier than it sounds and you can find out about it here. Go check it out and trade some games!