Attack on Titan: Wall Sina, Goodbye is a single-player adventure and visual novel game in which players explore the life and experiences of Annie Leonhart as a member of the Military Police Brigade. In this game, the story is set within the universe of Attack on Titan, focusing on Annie's personal journey and her interactions within the walls, providing deeper insight into her character and the broader narrative. It stands out with its narrative-driven gameplay, detailed character development, and its exclusive inclusion as a side story in the anime Blu-ray/DVD box, offering fans a unique perspective on the series' characters and themes.