Final Fantasy XV: Assassin's Festival was a free downloadable content event for Final Fantasy XV in collaboration with Ubisoft's Assassin's Creed series. It ran between August 31, 2017–January 31, 2018. The event featured gameplay from the Assassin's Creed series (such as stealth and climbing segments), mini-games (such as chocobo racing and "whack-a-cactuar"), and a chance to obtain exclusive items, such as the "Medjay Assassin's Robes" attire for Noctis, Gladiolus, Ignis, and Prompto. If the player had the Dream Egg obtained from the Moogle Chocobo Carnival, the player could unlock the "Master Assassin's Robes" attire for Noctis.
