Alistair Cockburn describes software development as a cooperative game. Scrum provides one set of rules for one such way of playing the game. The Scrum Guide is the official rule book. However, the Scrum Guide doesn't tell you the rationale behind Scrum as a whole, or behind many of its successful practices. Those rationales come out of experience, community, and the insights of its founders and inventors. The ScrumPLoP mission is to build a body of pattern literature around those communities, describing those insights, so we can easily share them with the Scrum and Agile communities.