This chapter presents an overview of machinima, an important socio-cultural movement that originated in the 1990s gameplay movement known as demoscene. The chapter presents a review of literature and key issues related to its evolution. Modes of its production (perfect capture, screen capture, asset compositing, bespoke machinimation) are described, along with the range of different genres that have emerged, including fan vid, parody, documentary, music video, advertising, reportage, reenactment, activist, pre-visualization and artistic forms. Thereafter, the chapter identifies channels of distribution and growth trajectories for each. The chapter then presents four key phases of the emergence of machinima, identifying the key actors and roles of organizations within each phase. As a movement that continues to evolve, the discussion presented is by no means a final analysis, thus the aim of the chapter is to present a ‘state of the art' overview of its emergence and development.