STEMadium is an interactive mobile app for STEM education through baseball-related games for 4th-6th graders. The game has an engaging narrative with a plot and characters, designed to further understanding and connection to both the learning and the fun. Players create their own characters, explore different levels, and solve baseball problems by applying math and science. The content is mapped to math and science standards to facilitate use in the classroom, after school programs, or at home. Available in the App store (iOS and Android).