What is the name of the Assassin’s Creed multiplayer game released in 2014?

The Assassin’s Creed multiplayer game released in 2014 is Assassin’s Creed Unity.

Unity includes a single-player campaign about Arno Dorian in revolutionary Paris and a separate set of cooperative multiplayer missions. These missions allow up to four players to work together as Assassins, combining stealth, combat, and coordinated objectives.

The game was released in November 2014 for PlayStation 4, Xbox One, and Windows. Its cooperative mode is distinct from competitive multiplayer modes used in earlier Assassin’s Creed games, such as those associated with Assassin’s Creed Brotherhood, Revelations, and Assassin’s Creed III.

Assassin’s Creed Rogue was also released in 2014, but it is primarily a single-player action-adventure game and follows Shay Cormac. Assassin’s Creed Syndicate, released in 2015, includes two playable protagonists but not Unity’s four-player cooperative campaign structure. Thus “multiplayer game” here refers specifically to Unity’s prominent cooperative missions.