This is the Book of Gaub, sold by Lost Pages. It looks great, and apparently is worth the purchase, but I'm going to use it to pick on a pet peeve of mine: game books are reference manuals, and should lay flat when opened.
Unfortunately, due to corporate consolidation and the advent of on-demand printing technology, very few printers are able to produce lay-flat hardcover or paperback binding. It's a laborious technique, usually requiring sewn sections and the application of cold glue during binding. All the North American or UK printers I know of have long since moved on to faster, cheaper techniques, usually involving hotmelt glue.
Given the game industry's minimal (often negative!) profit margins, cold glue binding is prohibitively expensive. But there are two production methods still available to us: saddle stitch and coil.
Saddle stitch binding is, put simply, staples down the spine. Think of magazines, or (if you've held it) the Mothership game book. This is perfect for shorter games. The book can be opened wide or folded back, and feels great to hold.
For longer games, it's all wire bind, baby! Wire bind is the absolute best for reference manuals — equally good at isolating a single page or laying a spread out in front of you, and works especially well for big books. It tends not to be used because there's no easy way to label or print on the spine, which is a bummer when books are shelved and displayed spine-out.
For more on binding processes, read the article Books that lie open by Robin Kinross.