In order to better understand teachers' perspectives on the design and development of digital game-based learning environments, this study examined the characteristics of digital learning games designed by teachers. In addition, this study explored how game design and peer critique activities influenced their perceptions of digital game-based learning environments and learning through game design. Qualitative data were collected from fifty game design documents and participant responses to reflection questions. The analysis of game design documents showed that the majority of the participants designed immersive game-based learning environments where players are required to use higher order thinking and real-world skills as well as academic content to complete missions or solve problems. The results of this study provide important implications for teacher professional development as well as for educational game development.