Game Theory Mugs. You’re going to need a mug to drink your coffee with after all the caffeine you’ve been drinking because of us. We love coffee, so much that we want to share it with the world. That’s why we’re introducing Game Theory Mugs! A new line of coffee mugs from Game Theory Shop that acknowledges the importance of game theory in our lives. The starter pack includes 4 unique coffee cups with a different gaming-related design and a coffee mug holder.