A fantasy RPG based on OpenQuest, an open source version of the rules that powered RPGs in the Basic Roleplaying series (Call of Cthulhu, Elfquest, RuneQuest, et al). Anyone familiar with those classic games will easily adapt to this system.
For those who aren't - in brief, the system is percentile based - a whole set of standard polyhedral dice are required for damage rolls and other results, but skill and combat rolls are made with percentile dice. The combat system is deadly (as it has always been with BRP games), and adventurers in an Age of Shadow campaign may find themselves avoiding combat more frequently, which could open some possibilities for creative tactics and great roleplaying.
This book has a great section on campaign structure, but very little background or lore - for that, see the Age of Shadow Campaign Guide, which fleshes out the world nicely.
A character sheet and a beautiful full-color map round out the book. All in all, a great start. I'm interested to see where it goes from here.
[4 of 5 Stars!]