Assassin's Creed Unity is set mainly during which major late-18th-century event?

Assassin's Creed Unity is set mainly during the French Revolution.

The game takes place in Paris from 1789 through the turbulent years that followed. Its protagonist, Arno Dorian, becomes involved with the Assassin Brotherhood after the murder of his adoptive father. The story places his personal investigation alongside the upheaval caused by revolution, factional conflict, and changing political power.

Players visit recognizable Paris landmarks, including Notre-Dame, the Louvre, and the Tuileries. The city is designed around dense crowds, interiors, and vertical movement, reflecting the scale and architecture of revolutionary Paris. Historical figures such as Maximilien Robespierre and Napoleon Bonaparte appear in the narrative.

Unity does not present a complete documentary history of the Revolution; it uses real events and people within the series' fictional Assassin–Templar mythology. The setting nevertheless makes the French Revolution the central historical backdrop and distinguishes Unity from the series' games set in Italy, the Caribbean, or ancient Egypt.