Which game engine powers Assassin's Creed Unity?

AnvilNext 2.0 powers Assassin's Creed Unity.

Ubisoft developed Unity using AnvilNext 2.0, an updated version of the company's internal Anvil technology. The engine was used to support the game's dense recreation of Paris, large crowds, detailed interiors, dynamic lighting, and expanded animation systems.

Unity was released in 2014 for PlayStation 4, Xbox One, and Windows. Its technical ambitions were closely tied to its setting: the game aimed to portray Paris during the French Revolution with unusually large crowds and a more detailed urban environment than earlier entries.

The original Anvil engine was used in earlier Assassin's Creed development, while Scimitar is an older Ubisoft engine name associated with the series' early technology. Disrupt Engine is linked to other Ubisoft projects. These names can sound plausible because Ubisoft has used several internal engines, but AnvilNext 2.0 is the specific engine credited for Unity.