Which Assassin's Creed game introduced the grappling hook used by Jacob and Evie Frye?

Assassin's Creed Syndicate introduced the grappling hook used by Jacob and Evie Frye.

The device lets the twins quickly reach rooftops, cross gaps, and create zip lines between buildings. It was designed for the dense, industrial architecture of Victorian London, where elevated train tracks, factories, and tall buildings shape movement through the city.

Syndicate was released in 2015 and follows the Frye twins as they challenge Templar control of London. The grappling hook supplements, rather than replaces, the series' traditional parkour system. Players can still climb buildings and move across rooftops, but the tool makes long vertical and horizontal traversals faster.

The grappling hook is often confused with later traversal systems, such as the rope launcher in some other action games. Within the main Assassin's Creed series, Syndicate is the entry associated with Jacob and Evie's compact mechanical launcher.