Abstract: Mobile devices are rapidly becoming the new medium of educational and social life for young people, and mobile educational games have become an important mechanism for learning. To enhance plant science learning, we developed a mobile educational game with Unity3D game engine and Kii cloud data storage named Little Botany, where players can create their own dream gardens in any season and at any location on earth. The virtual gardens created in Little Botany are augmented with real-world information. Little Botany uses real-time weather data for the garden location to simulate how weather affects plant growth. The game also teaches users how to take care plants on a daily basis. With education modules provided in Little Botany, users can also learn about plant structure and chemical reaction as photosynthesis, respiration, and transpiration.