Which Assassin’s Creed game follows Shay Cormac after he leaves the Assassins?

The Assassin’s Creed game that follows Shay Cormac after he leaves the Assassins is Assassin’s Creed Rogue.

Released in 2014, Rogue tells the story of Shay Patrick Cormac, an Assassin who becomes disillusioned with the Brotherhood after a disastrous mission connected to an ancient artifact. He later joins the Templars and hunts former allies, making the game the first main series entry to place a former Assassin in the role of a Templar-aligned protagonist.

Rogue is set during the Seven Years’ War, mainly across the North Atlantic, the Appalachian River Valley, and New York. Its naval gameplay builds on systems from Black Flag, but the cold Atlantic setting introduces icy waters and drifting icebergs.

The game is closely linked to Assassin’s Creed III and Unity. Its conclusion leads directly toward events in Unity, while its characters and missions revisit parts of the Kenway-era storyline.