- Arno City is a fictional city that appears in the video game "Assassin's Creed Unity". It is set in 18th-century Paris during the French Revolution. The city is known for its iconic landmarks, such as Notre Dame Cathedral and the Palace of Versailles. Arno Dorian, the protagonist of the game, explores the city as he uncovers a conspiracy within the Assassin Brotherhood. Arno City showcases a detailed recreation of Paris with its bustling streets, historical architecture, and rich atmosphere.