There are good things in this game: the RPG mechanics are fine (at various points in the story, you play as Frodo, Aragorn and Gandalf), the visuals are beautiful in parts, and certain aspects of game design are fantastic (Gandalf's magic-casting stands out). Little touches make it appealing to true fans, for instance when Aragorn receives the repaired Sword of Elendil and it glows during fighting. It would be a great game for even non-LOTR fans to play, since a good deal of backstory is provided in lengthy cinematics throughout the game. Fellowship's greatest asset, of course, is the story itself, as well as the bevy of villainous creatures that provide great boss-fight material. Many other games probably wished they had a Balrog to offer.
But the story deviates strangely from the book in order to satisfy the format of an RPG game. The final boss-fight (which we won't spoil here) is completely unrelated to anything devised by JRR Tolkien, and it seems hollow, strange and unsatisfying. The puzzles sprinkled throughout the game are random and often frustrating, as is your first encounter with the Ringwraiths (inevitably, you die many times--too steep a difficulty curve right out of the gate). This game is still strongly recommended, but with many caveats. Proceed with caution, and you're likely to enjoy yourself. Expect a masterpiece, and you'll be wishing you'd saved your money for a different title. --Jennifer Buckendorff