Lord of the Rings: Conquest (Battlefront)
http://en.wikipedia.org/wiki/Lord_of_The_Rings_Conquest
http://pandemicstudios.com/conquest/index.php
Made by Pandemic, creators of Star Wars: Battlefront, comes Lord of the Rings; Conquest... AKA, Lord of the Rings: Battlefront.
The gameplay is essentially a mirror image of BF in concept, you play as either the good guys or bad guys in a 3rd person/ 1st person view, and you choose from different classes which all have different abilities. Swordsman, archers, mages, etc.
True to form, you can either unlock the ability to play as a hero from the books/movies throughout the matches or you start off as one. The "hero Deathmatch" feature from Battlefront is also present in this game.
16-player online and 2-player online CO-OP (4 player split-screen)= win.
Videos-
old gameplay-