The Last of Us: Left Behind is a 2014 action-adventure game developed by Naughty Dog and published by Sony Computer Entertainment.
It is a downloadable expansion pack to the 2013 game The Last of Us.
Set in a post-apocalyptic world, the game switches between two stories: the first, set three weeks before the events of The Last of Us, follows Ellie as she spends time with her best friend Riley in an abandoned mall in Boston; the second takes place between the Fall and Winter chapters of The Last of Us and focuses on Ellie's attempts to scour an abandoned mall in Colorado for medical supplies to heal Joel while dealing with enemies.
