Game theory is a popular mode of thinking, especially in economics, that describes how systems in our environment use game-like rules and directions to recommend certain choices and predict if we'll make them. Whether its businesses offering sales at certain times or even offering platinum memberships to high-paying customers, our environment is designed to access the game-playing parts of our brains. In the season 6 finale of That Neuroscience Guy, we discuss how game theory can be used to trick your brain into making certain decisions.