Riddick is one of the most unique characters of the cinema, so much so that David Twohy and the Wheat brothers built an entire Universe around him. This site just takes a glimpse at this universe for both newbies and veterans of the Riddick Chronicles.
I would encourage all fans to watch and buy all the merchandise that they can in order to insure another addittion to this tale. I would personally recommend both of the books, the game, and the unrated dvd. The anime is a choice of personal preference, if you do not enjoy these types of things and can't watch to just further your craving for knowledge on Riddick then don't rent or buy it. Speaking of renting if you can't purchase then rent.