In this chapter, the authors describe Mission US: For Crown or Colony?, a history game for middle school students that they collaboratively designed, developed and tested. The authors argue that empathy is an important component of ethical thinking, and that history games, if well designed, can support the practice of empathy. The authors analyze how they designed Mission US to encourage the development of historical empathy and ethical thinking skills. Moreover, the authors also relate their design challenges, and the ethics of representing the past in games. They conclude with real world results from classroom implementation of the game, and design recommendations for creating games for historical empathy.