The document discusses several types of interactive and transmedia storytelling forms including interactive documentaries, news games, web documentaries, augmented reality games, and transmedia storytelling across TV shows and mobile games. It outlines recurring features such as nonlinear narratives, multimedia content, and user-generated content shaping the experience. Main challenges discussed include balancing interactivity and narrative, preventing content overload, and coordinating a coherent transmedia experience. Common mistakes mentioned are lack of resources for other platforms, parts of the experience not standing alone, and forgetting to tell a story.