These are a few of the fully realised Tolkien inspired games. The rest I find are lacking in some way whether it be in capturing the essence of Tolkien or just because the actual game is just blatantly bad. xD These games are just so fun and fell the most real of alot of strategy games. Like when you charge in with troops on horses, they actually charge in and smash through everyone! Unlike Age of Empires III where the horses just stand there with their riders swinging the sword! =P
The campaign in the first one follows the events of the movies and it is one of the best to play through! You'll play as heroes fighting through Moria to hundreds of troops defending the onslaught upon Helms Deep. It really is an epic feeling to see the troops all clash together, just like in the movie! The second Battle for Middle Earth however shows what happens in the North which is quite interesting but ultimately disappointing as it only features 8 missions compared to the first which featured like 30.
Don't worry though! It's a great strategy franchise which is worth playing!