Sekiro: Shadows Die Twice is a 2019 action-adventure game developed by FromSoftware. It was released in Japan by FromSoftware and internationally by Activision for the PlayStation 4, Windows and Xbox One in March 2019 and for Stadia in October 2020.

Sekiro follows a shinobi known as Wolf, who attempts to take revenge on a samurai clan that imprisoned him and kidnapped his lord. The gameplay is focused on stealth, exploration, and combat, with a particular emphasis on boss battles. It takes place in a fictionalized Japan during the Sengoku period and makes strong references to Buddhist mythology and philosophy. Lead director Hidetaka Miyazaki wanted to create a new intellectual property (IP) that marked a departure from their Dark Souls series, looking at games such as Tenchu for inspiration.

Sekiro received acclaim from critics, who praised its gameplay and setting and compared it favorably to FromSoftware's past work, although opinions on its difficulty were mixed. It won several year-end awards, including the Game Award for Game of the Year, and has sold over ten million units as of September 2023.

During the late Sengoku period, the Ashina clan, led by Kensei Isshin Ashina, seizes a land rich in divine favor, including a foreign deity dubbed the Divine Dragon which can grant immortality through a bloodline dubbed the "Dragon's Heritage" and through the Rejuvenating waters and its mukade-infested Sediment. During this time, a nameless orphan is adopted by the wandering shinobi Owl, who names the boy "Wolf" and trains him in his ways. As Wolf grows up, Owl entrusts him with safeguarding the young lord Kuro, the last of the Dragon's Heritage line.

Two decades later, the now-elderly Isshin is on his deathbed and the weakened Ashina is besieged by the forces of the Interior Ministry to finish the unification of Japan. Desperate to save his clan, Isshin's adoptive grandson, Genichiro, seeks Kuro to use his blood to create an immortal army. Disagreeing with his grandson's methods, Isshin has his private physician, Emma, warn Wolf so the two can flee. However, Genichiro confronts them and defeats Wolf in a duel, severing his left arm and capturing Kuro. Wolf is saved by a man called the Sculptor, who gifts him a prosthetic arm. To rescue Kuro, Wolf assaults Ashina Castle, where he meets Isshin and is given a new name: "Sekiro". Optionally, Sekiro can revisit his past; three years ago, Kuro's home was raided by bandits led by the shinobi Lady Butterfly, leading to Owl's apparent death. While Sekiro defeated Lady Butterfly, he was fatally stabbed by an unknown assailant and only survived after Kuro shared his blood with him.

Sekiro again duels Genichiro and defeats him this time. However, he survives due to having used the Sediment to gain corrupted immortality and escapes. Afterward, Kuro refuses to flee and instead wants Sekiro to perform the Immortal Severance ritual on him, which would result in his death and eliminate the Dragon's Heritage. Sekiro reluctantly agrees and sets out to collect the necessary materials for the ritual, including a weapon that can kill immortals known as the Mortal Blade from the Divine Child, the last survivor of experiments with the Rejuvenating Waters. After collecting most of the ritual elements, Sekiro is confronted by Owl, who ♥♥♥♥♥ his death in pursuit of the Dragon's Heritage and revealed to be the one who stabbed him three years ago. If Sekiro renounces his loyalty to Kuro on Owl's orders, he fights and kills first Emma and then Isshin while Owl kills Genichiro. However, Sekiro then becomes corrupted by bloodlust and kills Owl as well while Kuro watches in horror, leading to the "Shura" ending.

If Sekiro refuses, he kills Owl in combat and enters the divine realm to recover the final ingredient for the ritual from the Divine Dragon itself. Upon returning to the mortal realm, Sekiro discovers that Isshin has passed away while Ashina is under attack by the Ministry. Fighting through the chaos, Sekiro eventually finds Kuro under attack by Genichiro, who has retrieved another Mortal Blade. Upon defeat, Genichiro sacrifices himself in a ritual that revives Isshin in his prime so he might restore Ashina, a wish that his grandfather attempts to honor despite disagreeing with it. After killing Isshin, depending on the items gathered, three endings are available:

- In the "Immortal Severance" ending, Sekiro performs the ritual as instructed, killing Kuro and making himself mortal again. Afterward, like the Sculptor before him, Sekiro spends his remaining days carving Buddha statues while keeping his prosthetic to pass on to someone else one day.
- In the "Purification" ending, Sekiro performs an alternate ritual worked out with Emma's aid which has Sekiro sacrificing himself while freeing Kuro of the Dragon's Heritage. Afterward, Kuro prays at Sekiro's grave with Emma before departing these lands.
- In the "Return" ending, Sekiro collaborates with the Divine Child to make her a vessel for the Divine Dragon's power. After defeating Isshin, Sekiro takes the dying Kuro to the Divine Child, who absorbs him into herself. The Divine Child and Sekiro then leave on a journey to return the Dragon's Heritage to its home in the West.

Development of Sekiro began in late 2015 following the completion of Bloodborne's downloadable content, The Old Hunters. It was directed by Hidetaka Miyazaki, who had previously worked on the Dark Souls series and Bloodborne. Sekiro draws inspiration from the Tenchu series of stealth-action games developed by Acquire and published by FromSoftware. The team initially considered developing the game as a sequel to Tenchu; however, it quickly outgrew the concept. Miyazaki intended the combat changes to capture the feel of "swords clashing", with fighters trying to create an opening to deliver the fatal strike. He and the team also created the game to be an entirely single-player experience, as they believed multiplayer to have limitations they wanted to avoid. Despite the game taking place during the Sengoku period of real-world Japanese history, no historical people or locations are featured in the game.

The game was revealed via a teaser trailer at the Game Awards 2017 in December, showing the tagline "Shadows Die Twice". The game's full title was revealed to be Sekiro: Shadows Die Twice during Microsoft's press conference at E3 2018. The game was published by Activision worldwide, with FromSoftware self-publishing it in Japan and Cube Game publishing in the Asia-Pacific region. Sekiro's soundtrack was composed by Yuka Kitamura, with some contributions from Noriyuki Asakura. The game was released for PlayStation 4, Windows, and Xbox One on 22 March 2019. A collectors edition was also released the same day and included a steelbook case, a figurine of the protagonist, an art book, a physical map of the game's world, a download code for the soundtrack, and in-game coin replicas. A port for Stadia was released in late 2020. On 31 October 2020, a free update was released that added new content to the game, such as new cosmetics for Wolf and a boss rush game mode.

The word "sekirō" (隻狼) is a contraction of "sekiwan no ōkami" (隻腕の狼), which translates as "one-armed wolf." The subtitle "Shadows Die Twice" was initially meant to be used as a slogan for the teaser trailer until Activision requested it be kept for the final name.

It says online co-op and guess what? online co op doesn't work...

this game is very unfun
combat=bad
i am glad the studio making the game becomed shuted down to the gone forver and ever and ever and ever becaudse this game is veryu bad and as well; as unfun also the studio got shut down and i thinkl that is good becauyse this game is bad so that is prebably why the studio became shut down
oof ouch i just got a mosquito bite it hurts ow
the studio that made this game is shut down
the game is also bad and not fun becaset it is bad