Oxygen Not Included Codexery

The Duplicants

Cloned for survival, destined to build a home among the stars.

The Duplicants are cloned human beings engineered by the Molelectronics Corporation to serve as colonizers and laborers on hostile asteroid worlds. As the primary playable characters, they represent humanity's desperate reach into the cosmos, tasked with establishing self-sustaining outposts in environments devoid of breathable air or stable gravity. Their existence is defined by a cycle of deployment, survival, and eventual replacement.

Species
Human Clone
Affiliation
Moletronics Corporation
Role
Colony Worker / Explorer
Origin
Central Cloning Facility
Status
Active Deployment

Lore & Background

Upon awakening on an asteroid, Duplicants are immediately tasked with survival: managing oxygen levels, constructing habitats, and processing waste. They receive objectives and guidance from the Molelectronics AI system via terminal interfaces like the Printing Pod, with no remote Commander involved. Over time, logs reveal that many colonies have failed due to environmental hazards or resource mismanagement, suggesting the current batch is part of an ongoing experiment rather than a guaranteed success.

In Their Own Story

The cryo-pod hissed open, venting cold mist into the sterile air. Unit Seven blinked against the harsh light of the habitat dome, the familiar weight of the pressure suit settling on their shoulders. Outside the thick glass, the void stretched endlessly, punctuated only by the jagged silhouette of a gas giant looming in the distance. They checked the oxygen gauge one more time before stepping out into the dust, knowing that if they failed today, another clone would wake up tomorrow to finish the job.

Reader's Guide

Duplicants arrive on asteroids via transport vessels after being cloned from a single genetic source. Terminal logs scattered throughout colonies hint at previous failures, implying a history of lost expeditions where clones perished due to toxic gases or structural collapses. Cryptic messages often reference the 'Original' and question the ethics of mass cloning for labor. Some theories suggest the Corporation is testing the limits of human adaptability rather than seeking true settlement. The cycle of death and rebirth is central; when a Duplicant dies, they are recycled into biomass or compost to sustain the living. Players must balance their needs carefully, as stress and starvation can lead to rebellion or collapse. Understanding the hidden narrative requires reading every log entry, revealing a darker truth about why humanity relies on clones instead of natural volunteers for these dangerous missions.

Did You Know?

The Awakening on the Asteroid

In this survival simulation, three amnesiac colonists known as duplicants awaken within an isolated asteroid, devoid of any memory regarding their arrival. The player assumes the role of a colony manager rather than a direct controller, tasked with guiding these individuals to establish a sustainable habitat in a procedurally generated world. This environment is divided into distinct biomes containing unique resources and alien creatures, often separated by vacuum or toxic atmospheres that require careful preparation before exploration. Survival hinges on meticulously monitoring vital statistics such as hunger, waste accumulation, and oxygen levels, all while navigating hazards like extreme temperatures and diseases. The game simulates complex physical phenomena, including gas diffusion and liquid gravity, meaning that opening a new chamber can inadvertently drain breathable air from existing living quarters. This creates a constant balancing act where the player must ensure the duplicants have access to necessary life support systems before they venture into the unknown depths of their rocky prison.

Indirect Command and Skill Development

Management in this title relies on an indirect command structure where players issue prioritized instructions rather than controlling specific movements. When a task like constructing a wire conduit is assigned, duplicants autonomously gather materials, clear obstructions, and build the structure based on their individual capabilities. If a required resource is inaccessible, the colonists will simply abandon that specific job to pursue other available tasks, creating a dynamic workflow driven by availability. Each duplicant possesses unique statistics determining their proficiency in various activities, leading them to naturally gravitate toward jobs they perform best. Over time, these skills can be honed through practice and repetition, allowing the colony to become more efficient as the characters gain experience. The player's role is essentially that of a strategic planner who must align individual strengths with colony needs, ensuring that mining, farming, research, and hygiene duties are distributed effectively among the workforce to maintain long-term viability.

A Long Road from Early Access

Developed by Vancouver-based indie studio Klei Entertainment, this title was first announced at the Electronic Entertainment Expo in 2016 with plans for Windows, macOS, and Linux platforms. Following an early access period that began in February 2017, the game officially launched on July 30, 2019, after a brief delay from its original May release date. The development team drew inspiration from complex simulation titles like Dwarf Fortress and The Sims to craft its intricate systems. Post-launch support initially included significant updates such as the free Automation Innovation and the paid Spaced Out expansion, which introduced radiation mechanics and bee ranching. Although Klei eventually stated they would cease paid DLC in favor of free content, the game saw a surprising resurgence with four additional planet packs released between 2024 and 2026, including the Frosty Planet Pack and the Aquatic Planet Pack, demonstrating a sustained commitment to expanding the universe long after its initial completion.

Critical Reception and Expanding Universe

Upon release, the game garnered generally favorable reviews from critics, earning nominations for Strategy/Simulation Game of the Year at both the D.I.C.E. Awards and the Webby Awards. Reviewers praised its scientific accuracy and deep design progression, though some noted that the steep learning curve and lack of in-game tutorials could deter casual players or those without engineering backgrounds. Despite these challenges regarding complexity, the title established a strong legacy within the genre. This success eventually led to the announcement of Away Team, a survival crafting spin-off set within the same universe in June 2025. By April 2026, developers showcased multiplayer functionality for this new entry and initiated playtests, signaling a shift toward collaborative experiences while maintaining the core themes of resource management and environmental survival that defined the original standalone experience.

Frequently Asked Questions

Who are The Duplicants?

The Duplicants are cloned human beings engineered by the Moletronics Corporation to serve as laborers and colonizers on hostile asteroids. They are mass-produced in a central facility specifically designed to survive environments lacking breathable air or stable gravity.

What is their role in the universe?

Their primary function is to establish self-sustaining outposts by managing resources, constructing infrastructure, and exploring unknown territories. As the playable characters, they represent humanity's desperate attempt to expand into the cosmos through disposable workforce units.

How do Duplicants come into existence?

Every Duplicant originates from a Central Cloning Facility where their genetic material is replicated to create new units for deployment. This process ensures a continuous supply of workers capable of replacing those lost to the harsh conditions of space colonization.

Why are they significant to the story?

They embody the cycle of deployment and replacement that defines Moletronics' expansion strategy, highlighting the expendable nature of their existence. Their struggle for survival against environmental hazards drives the narrative of building a viable home among the stars.

What is the ultimate fate of The Duplicants?

Their existence is defined by a relentless loop where they are sent to build colonies until they die or become obsolete, at which point new clones take their place. There is no traditional 'ending' for an individual unit, only the continuation of the colony's survival through constant regeneration.

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