Raph Koster is a renowned game designer, writer, and artist with extensive experience in the game industry. Koster is a veteran designer who has served in various capacities in the industry, including lead designer and director of several massive multiplayer online games such as Ultima Online and Star Wars Galaxies. He has also worked in executive positions at Sony and Disney, served as a venture-backed entrepreneur, and contributed to numerous gaming-based projects, from Facebook games to AR research with Google. Koster is a recognized authority on game design and is a sought-after speaker at conferences worldwide. He has written several books, including the classic A Theory of Fun for Game Design, and has been named an Online Game Legend at the prestigious Game Developers Conference Online. Koster's specialties include game design (systems, narrative, etc.) and creative direction of online worlds, including all aspects of high-level conceptualization and technical implementation. He is also an inventor of innovative technologies, an expert in public speaking and public relations, and a skilled online community manager. In addition, Koster frequently writes and speaks about the social and legal implications of online worlds and game design.