EON is published quarterly and has recently reaching its 25th issue. The magazine has a professional quality to it, and interestingly the only advertisements you'll see in it are for in-game EVE Online corporations and services. The Industrial Sized Knowledgebase is a professionally laid out print copy of the most comprehensive guide to EVE ever released. A basic version is available for free as a PDF, and the purchased product is an extended reproduction delivered as a colossal ring-bound reference manual. EVE Strategic Maps is an accurate map of New Eden ready to be filled with post-it notes on big finds, wars and travel routes.