What do you mean I can't give six stars? I'll use the same thoughts as I did for the original edition of this game, because after reading this version, I still really think this is a top-notch game. Note that you will need a copy of the 'Savage Worlds Rulebook' to make sense of this (I'd highly recommend the 'Explorer's Edition').
This is one of the most original games you are probably likely to ever play. A mix of Western, Steampunk and Horror, Deadlands manages to blend all of these seamlessly. The book is easily digested in a couple of sittings (I'd recommend taking some time over Hucksters and over the mechanical construction rules).
The designers have a great eye for detail and have themed the game appropriately (I'm yet to see such a successful implementation of the look and feel of a game as this replicated). The game uses poker chips as well as dice for an 'Old West' feel and even the magic system has been devised to make it feel like a unique experience.
The character archetype choices are varied, with a small amount of stereotyping, but reasonably so. The writing style of the book is full of Western movie flavor and statistics and rules are written with the same style.
Despite the differences in the rules, I'd recommend browsing through the back-catalogue of Pinnacle titles for the original Deadlands to supplement this book. they'll provide you with a host of back story, setting information and are simply good reading.
Every roleplayer should play at least one session of this game (although I can guarantee that one won't be enough).
[5 of 5 Stars!]