Airnergy is a motivational smartphone application combining gaming system and smart home utility features. It uses real-world energy consumption data and alternates the environment in the virtual world to motivate users to reduce daily energy consumption since users will care about their in-game score. The more energy users save in the real world, the better in-game environment could be. The idea behind Airnergy is to make the air pollution problem more obvious and relatable, to provide an easier and fun way for people to help reduce air pollution and make our world a better place to live.