The Walking Dead: 400 Days is downloadable content for The Walking Dead: The Game. It was released in 2013.
The downloadable content 400 Days relates stories of other survivors in the zombie apocalypse, starting at its onset and occurring concurrently with the first season.
There are five main stories:
- Vince (Anthony Lam) has been sentenced to prison for murder, which he had done to help his brother sometime prior to the outbreak. On Day 2 of the outbreak, Vince is on a prison-bound bus with Danny (Erik Braa) and Justin (Trevor Hoffmann) when it is ambushed by walkers. Vince chooses one of the two to escape with, leaving the other to die.
- Wyatt (Jace Smykel) and his friend Eddie (Brandon Bales) have accidentally killed a friend of Nate (Jefferson Arca) and are fleeing from him in a car on Day 41 of the outbreak when they run over one of the prison guards from Vince's bus in a dense fog. One of them gets out to survey the damage but is abandoned when the other one is attacked by Nate and flees in the car.
- Russell (Vegas Trip) is a teenager travelling by foot to visit his grandmother. On Day 184 of the outbreak he is picked up by Nate, who takes Russell to a nearby gas station and truck stop, where they are attacked by an elderly man named Walt. Nate suggests killing and robbing Walt and his wife Jean, with Russell deliberating on staying with Nate or leaving him.
- Bonnie (Erin Yvette) is a former drug-addict traveling with Leland (Adam Harrington) and his wife Dee (Cissy Jones). Dee distrusts Bonnie due to suspecting that Leland is attracted to her. On Day 220 of the outbreak they are pursued by survivors that Dee stole supplies from, forcing them to split up into a corn field. After accidentally killing Dee with a rebar, Bonnie must decide whether to tell Leland the truth or lie.
- Shel (Cissy Jones) and her younger sister Becca (Brett Pels) are members of the group seen in Bonnie's story and are residing in the truck stop seen in Russell's story. Several members are also Vernon's former companions who Lee encountered in Savannah. Roman (Kid Beyond) holds firm control of the group. When a Portuguese scavenger named Roberto attempts to steal from the group on Day 236 of the outbreak, Shel is given the deciding vote on him being killed or allowed to leave. Later on Day 259, fellow group member Stephanie (Dana Bauer) is caught stealing supplies, causing Roman to ask Shel to kill her. Shel then either goes through with it or escapes the camp with Becca on their caravan.
The five stories culminate in a final scene on Day 400 where Tavia (Rashida Clendening) discovers photos of the survivors on a billboard near the now-overrun truck stop, along with a map to a nearby location. She finds the group and offers them sanctuary nearby. Bonnie accepts, with the others either accepting or refusing depending on either their past choices or whether Tavia successfully convinces them.