SPI boxed game of 3 different Middle Earth games: War of the Ring is the big game, the 2 small games are Gondor and Sauron.
Gondor is based on the siege of Minas Tirith along with the battle outside the city gate as depicted in J.R.R. Tolkien's novel The Lord of the Rings.
Sauron is a simulation of the Battle of Dagorlad from the 2nd Age of between Sauron and the forces of the Free Peoples (elves, men and dwarves) outside the main gate of Mordor.
In War of the Ring, great armies battle while another game is going on at the same time with individual characters around the fate of the One Ring.