The aim of Game-sustain project is to motivate people to get involved in activities ensuring global sustainable development. We would like to design a local action based on the idea of gamification that will contribute to the sustainable development goals. 32 young people from Poland, Italy, Croatia and Germany will spend 8 days in Czestochowa, Poland to work and learn together. We all met in 2015 at European Youth Meeting where we came up with the idea of Game-sustain project and than designed it. We want to understand better how gamification works and use its principles to cause positive change in our local comunities that can be fun. We will first share our knowledge about the sustainable development and gamification, than we will make a survey in the city and after that we will spend a couple of days brainstorming, designing, and finally creating our gamificiation. We think that only through fun, not obligations, a real change can happen. That is why we want to make people aware about important issues through enjoyable activity. Later, similar action will be repreated in Osijek, Stuttgart and Vicenza. Before we were active only locally within "A Possible World" project. Now our activism have a chance to go on higher european level.