Realms of the Three Rings je rozšíření pro The One Ring, oficiální stolní RPG hru založenou na dílech J.R.R. Tolkiena. Tato příručka nabízí hluboký pohled do tří elfských říší – Lórien, Roklinky a Lindonu – a představuje jejich obyvatele, včetně mocných elfích pánů. Dále obsahuje podrobnosti o Sauronových intrikách proti nesmrtelnému lidu, dvanáct zajímavých míst pro dobrodružství a pravidla pro hraní vznešených a lesních elfů, včetně možností pro postavy až do 20. úrovně.Kniha je v angličtině.“In Eregion long ago many Elven-rings were made, magic rings as you call them, and they were, of course, of various kinds: some more potent and some less. The lesser rings were only essays in the craft before it was full-grown, and to the Elven-smiths they were but trifles – yet still to my mind dangerous for mortals. But the Great Rings, the Rings of Power, they were perilous.” In the twilight of the Third Age, three realms of the West-elves still endure in Middle-earth. By the power of the Three Rings, they exist as a testament to a time that was. But not only the Elves remember. As Sauron gathers his strength to bring war to Middle-earth once again, he plans a devious vengeance against those who humbled him long ago. Realms of the Three Rings™ is a supplement for The One Ring™, the official tabletop roleplaying game based on the works of J.R.R. Tolkien.