I'll try to generalize this as best I can, for the sake of touching on points common to all of the planets decks, as there is a lot of good to say about each individual deck, but it would take too much time to do it in that fashion. Each deck in the Planet series is completely custom, featuring one way backs, completely custom court cards and spot cards (all custom fonts and pips), and two non-identical jokers. One joker features some sort of creature that might have come from that planet, the other joker features some character or artwork that is representative of that planet. Each deck also includes an advertisement card and a "solar system" card which indicates where that particular planet is in the solar system. The Pluto deck is the one "odd man out", as it's smaller than the rest and comes enclosed in a magnetic hardened plastic case. The Pluto cards are a "mini" deck which, as of this writing, are NOT included if you are purchasing the Planets series all together as a set from this website. Also of note is that the faces of the Pluto cards have a mirror type finish, but do not include the aforementioned advertisement card of solar system card. These decks look particularly attractive as a set, displayed in order on your bookshelf. When all is said and done, these are fantastic cards, and a true collector would want to have every deck from this series in their collection.
