Abstract: Interactive media is defined by objects and interaction logic; unique objects for the interactive media are determined according to the interaction logic. The unique objects are pre-rendered and saved. When a user interacts with the interactive media, the user device requests content. The pre-rendered unique elements are determined and composited according to two-pass depth and alpha compositing technique, which technique reduces composting complexity while maintaining quality. The resulting composited media is then streamed to the user device. Some non-pre-rendered objects may be rendered and/or composited by a server- or client-device at run-time.