This paper is to propose a Conceptual Design of Game Street, aka gamified street, for youth facility and environment. The purpose of this study is to research on the game street as youth facility for galvanizing into the economic downturn regions with gamification. The gamification is the idea of using game-thinking and game elements to solve problem and engage players(Kim, J.T. et al, 2014). A well-gamified things(applications, places, services) can provide players (stand for users, citizen, audiences, customers, clients, buyers, learners, patients, soldiers, etc) with the supreme user experience, aka PX(player experience) causing playful behavior and a positive mindset. So gamified items can promote the depressed street to improve the quality of youth’s life and to reach a sustainable development of urban economic. This proposal treats the gamified street as the most effective way for meaningful youth facility and environment. The main goal of a gamified street is to encourage greater engagement in young people(player) and to make richer experiences through gamification. This paper propose a conceptual design of game street with five zones focusing on PangyoTechnovalley in Seongnam City. The gamified items for youth facility and environment on this game street derive from tens of gamification cases as pre-studies treated.