Based purely on a quick browse through the internet, it doesn’t seem that the ebook format (typically, epub and mobi) are popular formats for role-playing games. I suspect this is primarily because of the extra work involved for the publisher, since converting a graphics and chart-heavy format to an essentially ‘text-only’ format isn’t the easiest job in the world. The ebook is also a fairly new technology, and most tablets can handle the PDF format that’s so common among the RPG community now.
That being said, I’ve decided to convert the Corporia RPG both to mobi and epub format, for Kindles and other tablets respectively. The charts and tables have been simplified to a mostly line-item format, and will appear as close as possible to their original locations in the text. Where possible, both will be bundled free with the PDF wherever that digital edition is sold online (such as DriveThruRPG, RPGNow, and Indie Press Revolution), as well as being sold separately. I hope to release them later this month, and will certainly mention it here when I do. (Citizen-level and higher Kickstarter backers will, of course, get the variant editions for free, since “future-proofing” was one of the stretch goals.)
I’ve also released the City Districts map (page 132 of the core rulebook) as a free visual aid, since it won’t be included in the ebook. That’s free to anyone who wants to download it, whether you’ve purchased the other products or not. You can currently download it on DriveThruRPG, RPGNow, and on the Brabblemark Press website. Enjoy!