Amazingly well done. Written well enough to start quickly but with the required depth of material to maintain your interest. Even better there is a significant amount of additional material that adds depth to the game in key areas. Of interest this game has been noted to be one of the best solo/solitary RPG's and is played extensively in that community (myself included!). I believe SWN is both so well designed and such an open sandbox universe that any play style is facilitated. Oh, and if your still not sure, give it a read through, its free.
[5 of 5 Stars!]