Through a prior project, the team developed a physical board game for students to learn about the Electoral College which uses data from actual elections to create an authentic civic data literacy experience. This project team will develop a prototype of an online multi-player game to be played against a classmate so that students can apply critical thinking skills in evaluating political or historical claims. This cross-disciplinary approach will encourage students to structure arguments based on evidence and will use statistical literacy, data visualization, and ethical data use to inform historical claims. At the end of Phase I project, the team will conduct a pilot study with four educators and 200 high school students to test if the prototype functions as planned, if educators believe that the game can be integrated within classroom practice, and if students demonstrate increased knowledge of the Electoral College and data literacy on researcher-developed measures.