The Bunker

Lore & Background

The OxyDrones did not arrive in a grand ship or a sweeping landing zone. They surfaced into a pocket of bedrock, a narrow chamber the player community has come to call the Bunker. The walls are close, the air is thin, and the first task is not exploration but survival: keeping the little metal creatures alive long enough to understand what is outside.

In the game's narrative framing, the Bunker represents the threshold between the OxyDrones' programmed purpose and their lived experience. They are built to explore, to build, to endure. But the Bunker forces them to confront the most basic question first: can they keep breathing? The heat from their own activity, the finite oxygen in the sealed space, the need to convert raw resources into food and water—these are the problems that shape the colony's character before it ever sees a wider world.

As the player digs outward, the Bunker becomes a memory, a foundation. The structures built in those first walls—oxygen plants, water purifiers, the first food synthesizers—often remain as the colony's oldest infrastructure, a testament to the era when the entire civilization fit inside a handful of tiles.

In Their Own Story

The first OxyDrone to open its optical sensors found only rock. Grey, unyielding, pressing in from every direction. The air tasted of metal and dust. It turned its small body in a slow circle, counting the walls by the faint glow of its own chassis light.

Three others stirred nearby, their joints clicking softly in the silence. No one told them what to do. No one had to. The mission parameters were already in their cores: survive. Build. Expand. But the Bunker made the first word the only one that mattered.

One of them nudged a loose stone aside and found a vein of something green and damp. The others gathered. In the cramped dark, with the oxygen meter already ticking down, they began to build. Not a city. Not yet. Just a wall. Just a filter. Just enough to take one more breath than the last.

Reader's Guide

The Bunker functions as the narrative and mechanical onboarding biome. Its purpose is to teach the player the core survival loop—oxygen generation, heat management, food production, and water purification—within a space small enough that every action has immediate, visible consequences. There is no room to ignore a heat buildup or let oxygen drop; the walls are close enough that failure is felt in seconds.

Key structures the player typically establishes here include an oxygen plant (often powered by a small fuel or solar source), a water purifier or condenser, a basic food synthesizer, and a heat sink or radiator to manage the thermal output of those machines. The layout philosophy is density: stack functions vertically, route gases carefully, and keep the OxyDrones' breathing zone separate from high-heat or toxic areas.

As the colony expands, the Bunker transitions from active workspace to historical foundation. Older machines may be left running as redundant backups, and the original walls become a psychological landmark for returning players. The design choice to start in a confined space ensures that the player's first engineering instincts—efficiency, redundancy, thermal management—are formed under pressure, making the later open-biome challenges feel like a reward rather than a reset.

Did You Know?

• The Bunker's cramped starting space is a deliberate design choice: by limiting the initial area, the game forces players to internalize oxygen, heat, and food loops before they ever encounter the complexity of larger bio
• OxyDrones in the Bunker must be kept within a breathable, non-toxic, and non-overheated zone at all times; a single misplaced heat source can make the entire starting chamber uninhabitable within a few cycles.
• Many veteran players keep their original Bunker structures running indefinitely as a 'legacy layer,' treating the oldest oxygen plant or water purifier as a symbolic heart of the colony even after the base has expanded h
• The Bunker's enclosed geometry means that gas routing and pressure dynamics behave differently than in open biomes, making it a natural training ground for understanding how oxygen and carbon dioxide interact in sealed v