Riddle is a business services company based in the United States, specializing in research and development within the interactive content domain. Founded in 2014, the company has produced a series of white papers that explore various strategies for enhancing audience engagement through interactive content. Their published works include insights on the use of artificial intelligence to generate quizzes and other interactive elements, emphasizing the importance of evergreen content that maintains relevance over time. Riddle's white papers address topics such as monetization strategies for publishers, engagement through mini-games, and the effective use of quizzes as marketing tools. Additionally, the company has released a case study that highlights the impact of quiz marketing on audience interaction. Riddle's focus on creating sustainable content solutions positions it as a resource for publishers, media companies, and brands seeking to optimize their content strategies and improve audience retention. The company's expertise is reflected in its commitment to developing innovative approaches to interactive content.