Dishonored: Death of the Outsider is an action-adventure stealth video game developed by Arkane Studios and published by Bethesda Softworks. It is a standalone expansion pack following Dishonored 2, and was released 15 September 2017 on Windows, PlayStation 4 and Xbox One. The game takes place in the coastal city of Karnaca after the events of the previous title. It follows the former assassin Billie Lurk as she reunites with her mentor Daud and come up with a plan to kill the mysterious entity known as The Outsider. The game is played from a first-person perspective and the player has access to a variety of supernatural abilities to complete missions in a multitude of ways, from stealth to purposeful violent conflict.

Death of the Outsider was originally planned as a downloadable content for Dishonored 2, but became a standalone expansion after the team decided to explore different approaches with its story and gameplay. Lurk was chosen as the protagonist for being a favorite with the developers. The narrative was conceived to tie loose ends left by the previous games, offer a different perspective to the player and end the narrative arc that began with the original Dishonored. Gameplay elements were reformulated or completely removed to differentiate the game from its predecessors, adapt it to the standalone expansion format and encourage the player to experiment and explore their choices.

The game was announced during the Bethesda press conference at E3 2017. Death of the Outsider was well-received by the critics, who praised its game design and considered a good ending to the Dishonored series up until that point. However, the main criticism was focused in its weak narrative and levels considered unremarkable when compared to its previous titles. The game was nominated for a few industry awards, including Outstanding Achievement in Videogame Writing at the Writers Guild of America Awards. After its release, Arkane Studios announced that the Dishonored series would be entering a hiatus.
The gameplay is similar to Dishonored and Dishonored 2. The player is equipped with a short sword. If the player sneaks up on a foe, they can stab them to death quickly and quietly. The player has other gear, such as a wrist-mounted crossbow, land mines, and grenades. A new item is the hook mine, which grabs a nearby enemy and knocks them unconscious, or they can be set to kill.

After the first mission, the player gains access to three supernatural abilities. Unlike previous games in the series, the player does not purchase them with "runes"; they are all fully unlocked from the start. These abilities cost energy to use, but unlike in the previous games, the player's energy regenerates fully on its own; there are no consumables to replenish energy.

Lurk's main mobility power is "Displace", which allows her to set a marker in the world, and teleport that marker at any time. "Semblance" allows the player to take the faces of living non-player characters (NPCs) and use them as a temporary disguise, though they can only take a character's face once. The disguise drains power as the player moves, but not when they are standing still.[3] Using Semblance on specific named NPCs may produce unique interactions. Completing the game unlocks an "original game plus" mode, where the player has access to some powers featured in Dishonored 2.[2] As in the previous games, the player can collect "bonecharms", which are scattered throughout the levels. Wearing a bonecharm provides minor upgrades to the player's abilities.

During missions, the player may pick up optional "Contracts" at black markets, which are side missions that involve doing tasks such as assassinating another character.[4] In one example, the character is tasked with killing a mime and making it look like a suicide.