Which game is the first Assassin's Creed title set primarily in Victorian London?

Assassin's Creed Syndicate is the first Assassin's Creed title set primarily in Victorian London.

Released in 2015, Syndicate takes place in London during the Industrial Revolution, with its story beginning in 1868. Twin protagonists Jacob and Evie Frye challenge Templar control of the city while building an organized gang and working with historical figures such as Charles Dickens, Karl Marx, and Queen Victoria.

The setting distinguishes Syndicate from Unity, which is centered on Paris during the French Revolution. Rogue focuses on the North Atlantic and other eighteenth-century locations, while Liberation follows Aveline de Grandpré in eighteenth-century Louisiana and the Caribbean. Syndicate introduced vehicles such as carriages and a grappling launcher to support movement through the rapidly industrializing city.