Video games are often discounted as entertainment, but I and many others have found they can be valuable tools to teach history, international relations, and strategy in an engrossing and engaging way that complements traditional academic learning. I have learned valuable lessons about grand strategy, international relations, and history from games. Historical strategy games, used over a long period, might also teach students about grand strategy. But they also teach shorter-term diplomacy. In Europa Universalis I have used the power of alliances of convenience, and I have learned how to predict invasions by reading diplomatic cues and troop movements.