For organizations, creativity is a source of value added, performance and competitive advantage. This being the case, what can organizations do to improve the creativity of their workforce? What mechanisms can they put in place? How can they ensure constant innovation in a turbulent environment? This article presents a lever of creativity that is used more and more frequently by organizations: communities of creation. These communities are comprised of informal groups of individuals who share an area of specialization and a passion for a collective project. Their aim is to promote knowledge sharing in order to facilitate the emergence of a collective intelligence and the development of new content – in a word, to stimulate innovation. Following a brief summary of the literature on communities of creation, this article explains how Ubisoft, a video game company, manages its communities of creation both internally and externally. In conclusion, the article describes the conditions of success for optimizing the effectiveness of communities of creation. Key words: community, community of creation, creativity, video game