Assassin's Creed: Revelations is an action-adventure video game developed by Ubisoft and released in 2011. It is the fourth main installment in the Assassin's Creed series and follows the story of Ezio Auditore, who travels to Constantinople to uncover the secrets of his ancestor, Altair. The game features a mix of stealth, parkour, and combat mechanics, allowing players to explore a richly detailed open world. In addition to the single-player campaign, Revelations introduces new gameplay elements, such as the use of a hook blade for enhanced mobility and the ability to craft and use bombs. The game also includes a multiplayer mode, where players can compete against each other in various game types. Overall, it expands on the lore and gameplay mechanics established in previous titles.