Massively Multiplayer Online Role-Playing Game, that's what Lord of the Rings Online: Shadows of Angmar is. Massively Multiplayer, which distinguishes it from games that support mere dozens of players. Online, demanded by the Department of Redundancy Department, since Massively Multiplayer pretty much implies being online. Role-Playing Game: ah, finally we're at what kind of game it actually is. In RPGs, players take on the role of a character in a different world, and play within that world according to defined game rules.