From publisher blurb: Jacob’s Tower is the critically acclaimed mega-dungeon for the Pathfinder RPG. Regardless of your world, plot, or players, it is easily run in any campaign or as a mega-dungeon. Jacob's Tower is an adventure for 3 – 6 first through thirteenth level PCs using the Pathfinder RPG rules. It is 152 pages long, fully illustrated. The dungeon is designed to test a party’s versatility and flexibility, utilizing every skill and creature type in the book over every three Levels. It both introduces new players to the wonders of Pathfinder and gives experienced players a non-traditional setting in which to test their skills. This mega-dungeon never lags or slows down. Each combat is unique, interesting, and carefully crafted to deliver the best possible experience for GMs and players alike. Don't expect intricate maps or complex artwork: the maps are basic and the artwork is in black and white. Expect incredible writing, imaginative challenges, and a mindblowingly fantastic time for you and your players.