Leaded by Ivan Capdevila and Vicente Iborra PLAY perfoms as a KNOWLEDGE COMMUNITY or, in other words, as an open collaborative platform between several research fields related with the architectural production. PLAY offers services within the context of EXTENDED SUSTAINABILITY. All its actions strive for ENVIRONMENTAL, SOCIAL, ECONOMICAL AND CULTURAL RICHNESS. Its work field embraces sustainability from architecture, urbanism and design, as well as political actions consultancy and cultural management. The investigation of new realities is part of our PROFESSIONAL, RESEARCH AND TEACHING work, understanding these three meanings as an only entity. PLAY uses software as a permanent tool of visualization, edition, measurement, analysis and monitoring of energetic and constructive process, as well as social and cultural. In the same way, the systematic use of new programming language enables new interactions between services / products and their costumers. PLAY, in short, becomes the place where the collective establishes a set of PLAYING RULES to PERFORM WITH COMPLEXITY INTO THE REALITY.