The Lord of the Rings Online: Helm's Deep
From Tolkien Gateway
The Lord of the Rings Online: Helm's Deep is the fifth expansion to The Lord of the Rings Online game. It expands the world by opening up the West Rohan region, including the city of Edoras, from the Gap of Rohan south and east towards the Eastfold. It also introduced expansions to gameplay through the Big Battles system (the first of which being the expansion's namesake), raising the level cap to 95, class changes, and the extension of the epic story.