In Greenet, each user has a planet. The environmental protection benefits and harms caused by the user's daily behavior will be magnified several times and affect the ecology of the planet. Finally, we published it online and won a second national prize in the Wechat Development Competition. Although I was just a freshman while my team members were all senior or junior students, I led the team to make it a whole published game. This project taught me the differences between a single design and a product(test, programming, operation). I also learned to design by doing.