It's no secret, George R. R. Martin is a master world-builder with a knack for complex settings. Whether you watch "Game of Thrones" on HBO or read the original "A Song of Ice and Fire" novels, it's a challenge to keep track of all the moving parts. What's that mean for gamers? The world of Westeros is ripe for roleplayers to fill with their own characters and adventures.

One of those settings that readers and viewers alike have been itching to see more of is The Wall, where the Night's Watch serves to protect the seven kingdoms of Westeros. Now, Green Ronin Publishing is preparing to release the Night's Watch Sourcebook, giving gamers an expansive toolbox to explore The Wall and lands beyond.

According to Green Roning, the Night's Watch sourcebook "includes rules for playing men of the Night's Watch and wildlings alike, as well as new information about the mysterious Others."

Previews have been posted, starting with the book's introduction pages, which gives a great look at what to expect in the detailed table of contents and section descriptions. Additionally, Green Ronin has shared the character page for a spearwife, the young women warriors of the Wildlings.

The sourcebook is a 128-page hardcover retailing for $32.95. It is available for pre-order now, with an option to add a .pdf version of the book for $5.

If you haven't yet explored the "A Song of Ice and Fire Roleplaying Game," now is a great time. Green Ronin Publishing recently revised the core rulebook to "A Game of Thrones Edition." The Night's Watch is the first full sourcebook, so there's not much to catch up on. Start with this  free quickstart rules pdf.