Emerald Empire is a must-have for Legend of the Five Rings Role-Playing Game Players & GMs who wish to bring their campaigns alive with a wealth of details about the workings of Rokugani life, as well as plot hooks and adventure ideas. It is also a crucial resource for players who want to understand how their characters — or the NPCs whom they encounter — are expected to act, and think and feel, and how they are shaped by the world in which they live.

Above all, Emerald Empire: The Legend of the Five Rings Companion is a comprehensive guide to the world of Rokugan, its wonders and its commonplaces. It is a rules supplement that requires the Legend of the Five Rings Role-Playing Game Third Edition core rulebook to make full use of it, but it also contains by itself much of interest to any Legend of the Five Rings fan.