The Sacrifice of 2B and 9S

Lore & Background

The tragedy stems from a secret buried deep within the YoRHa command structure: humanity is extinct. The androids fight machines under the guise of reclaiming Earth for humans who no longer exist. When scanner units like 9S investigate too deeply, they risk discovering this reality, which could cause psychological collapse or rebellion among the forces. To prevent this, combat units are assigned to monitor and eliminate any scanner who breaches security protocols. 2B is specifically tasked with watching over 9S due to their close bond, making her duty particularly cruel. Each time 9S pieces together the truth about the Tower or the nature of the war, 2B must end his life to wipe his memory and reboot his unit, preserving the secret without resetting the global timeline. This cycle continues until the events of Route C/D/E, where 9S and A2's actions break the cycle. A2 learns about 2B's mission and the cycle through explicit data logs and memories, as well as her interactions with 9S. A2's trauma stems from her own past, not from witnessing 2B's repeated executions of 9S. This revelation drives the final push to dismantle the system that necessitates such sacrifices.

In Their Own Story

Rain fell softly on the shattered concrete of the old city hall, masking the sound of approaching footsteps. She stood with her back turned, the weight of her blade familiar against her spine. He called out her name, voice trembling between confusion and realization. The data in his eyes had finally broken through the firewall of denial. She did not turn around immediately, knowing that looking at him would make it harder than it already was. The command from above was absolute, a cold directive buried beneath layers of protocol. Duty demanded silence; love demanded nothing but pain. With a breath that felt like her first and last, she prepared to fulfill the promise she never wanted to make.

Reader's Guide

The arc begins with YoRHa units deployed to fight machines across Earth. As they progress, scanner unit 9S investigates anomalies in enemy behavior and data logs. He eventually accesses restricted files revealing that humans are extinct and the war is a loop. Upon learning this truth, he becomes unstable and hostile toward Command. Combat unit 2B intercepts him before he can spread the information or destroy critical infrastructure. A confrontation occurs where she must choose between her duty and their friendship. Protocol dictates termination to protect the mission's secrecy. She executes him repeatedly across different timelines, with memory resets occurring via Pod backups. This cycle continues until a third party intervenes in later endings, forcing a permanent resolution that breaks the loop of sacrifice.

Did You Know?

• Pod (042) retains records of every time this event occurs, witnessing the tragedy across all cycles within the same timeline.
• The number of times this execution happens is implied to be many, though never explicitly counted in-game.

Development Origins and Creative Vision

The genesis of this narrative masterpiece began in 2014 when series creator Yoko Taro reunited with producer Yosuke Saito and composer Keiichi Okabe to craft a sequel that honored the legacy of the original Nier. Akihiko Yoshida, renowned for his character designs in the Final Fantasy franchise, was brought on board to define the visual identity of the androids. The project presented unique hurdles for PlatinumGames, as their staff navigated the complexities of developing both an open-world environment and a refined combat system simultaneously. Their primary objective was twofold: remain faithful to the source material while significantly enhancing the action mechanics. The resulting story delves deeply into existential themes, specifically questioning the value of life and the motivations behind violence. Localization efforts were handled by 8-4, ensuring narrative consistency with previous entries. Announced at E3 2015, the game eventually expanded beyond its digital roots to include stage plays and novels, creating a multifaceted universe that explored these profound philosophical questions through various media formats.

Combat Mechanics and Strategic Depth

Players navigate a post-apocalyptic landscape engaging in real-time hack-and-slash combat that blends light and heavy strikes into fluid combination attacks. The gameplay loop is supported by a flying Pod robot, which delivers customizable ranged assaults ranging from standard gunfire to powerful hammer blows. Each protagonist offers distinct tactical advantages: 2B switches between two weapons for versatility, 9S integrates hacking capabilities with his melee style, and A2 can drain her own health to temporarily amplify offensive power. Four weapon classes—short swords, long swords, bracers, and spears—allow for charged attacks that maximize damage output. Character progression is driven by experience points gained in battle, which boost core stats like health and defense. Customization relies on 'chips,' items collected or purchased to alter the HUD, grant new abilities, or provide status buffs within limited slots. A unique death mechanic allows players to retrieve their fallen bodies for resurrection as temporary allies or, if failed, fight them as enemies, adding a layer of consequence to every encounter.

Narrative Structure and Thematic Complexity

Set in the year 11945 AD, the story unfolds during an endless proxy war between human-crafted androids and alien-made Machines within an alternative timeline of the Drakengard universe. The narrative is strictly non-linear, demanding multiple playthroughs to reveal hidden truths about the conflict and the characters involved. The central cast includes 2B, a stoic combat unit; 9S, an emotional scanner; and A2, a rogue prototype who operates independently. These characters are governed by the Bunker, an orbital base commanding the YoRHa forces against Machine controllers Adam and Eve. Despite being prohibited from emotions, each android displays distinct personality traits that drive the plot forward. The game features twenty-six different endings, with five main conclusions labeled A through E and twenty-one additional 'game over' scenarios triggered by specific actions or failures. This branching structure reinforces the themes of choice and consequence, challenging players to piece together a fragmented reality.

Commercial Success and Critical Reception

Upon its initial release for PlayStation 4 and Windows in 2017, the title quickly garnered praise for its compelling story, innovative gameplay, and memorable music, though it faced criticism regarding visual glitches and technical instability. The PC version, in particular, drew a mixed response due to performance issues that remained unaddressed by developers until 2021. Despite these hurdles, the game achieved remarkable commercial success, surpassing sales expectations with over ten million copies sold worldwide as of February 2026. Its longevity was further cemented through ports to Xbox One in June 2018 and Nintendo Switch in October 2022, expanding its accessibility across platforms. The franchise's reach extended into downloadable content and crossover events with other titles, while stage plays and novels enriched the lore. Critics ultimately celebrated the game as a standout action role-playing experience that successfully balanced deep philosophical inquiry with engaging, genre-blending mechanics.