Red Circuit

Lore & Background

On the grey, mineral-rich surface of the alien world, the player's early factory is a tangle of smelters and a single Assembling Machine. The first batch of Red Circuits clatters out with a satisfying mechanical whir, their small boards a stark contrast to the raw iron and copper that fed them. This is the moment the factory stops being a smelting operation and starts becoming an electronics workshop. The naming convention—Electronic, Red, Green, Blue—mirrors the increasing density of components etched onto each board. A Red Circuit is no longer a simple conductor; it carries logic. It is the threshold where the player's factory begins to *think*, even if the thinking is still rudimentary. The alien creatures that stalk the periphery of the base seem indifferent to this small triumph, but the player knows that every Red Circuit is a step further from the crash site and closer to the launchpad. As the factory sprawls across the landscape, Red Circuits become a commodity, produced in the thousands per minute by rows of Assembling Machines fed by iron and copper smelting lines. Yet their importance never diminishes. They are the quiet, unglamorous substrate upon which all higher-order computation rests, and a single bottleneck in their production can idle an entire processing-unit line.

In Their Own Story

The Assembling Machine hums its low, steady drone, the sound that has become the lullaby of the night shift. Iron plates slide in from the left, copper cable from the right, and every few seconds a small Red Circuit pops out onto the output belt, tumbling gently toward the buffer. The player watches from the catwalk above, coffee long gone cold, the alien sky a bruised purple beyond the factory lights. Somewhere beyond the perimeter, a spitter hisses and retreats into the dark. The machine does not care. The machine never stops. And the Red Circuits keep flowing, one by one, building the brain of a machine that will one day carry the player out of this world forever.

Reader's Guide

Recipe: 10 Iron Plate + 1 Copper Cable → 1 Red Circuit. Machine: Assembling Machine (any tier). Upstream chain: Iron Ore → (Smelter) → Iron Plate. Copper Ore → (Smelter) → Copper Plate → (Assembling Machine) → Copper Cable. Both smelting lines are independent and can be scaled in parallel. Downstream chain: Red Circuit feeds into Red Wires (1 Red Circuit + 1 Copper Cable → 8 Red Wires) and Green Circuit (2 Red Circuit + 2 Copper Cable → 1 Green Circuit). Green Circuit then feeds Blue Circuit and Processing Unit, which in turn unlock advanced research and rocket parts. Bottleneck: The 10-to-1 iron plate requirement makes iron smelting the typical limiting stage. Copper cable demand is comparatively light (1 per Red Circuit, needing only 8 copper plates), so copper smelters rarely constrain the line unless the factory is also producing massive quantities of Red Wires simultaneously. Scaling: Early on, one Assembling Machine suffices. As Green Circuit and Processing Unit demand grows, Red Circuit output must scale roughly linearly. A common layout pairs a 2:1 ratio of iron smelters to copper smelters with a single Assembling Machine per Red Circuit line, then doubles the Assembling Machine count to match downstream Green Circuit demand.

Did You Know?

• The color names (Electronic, Red, Green, Blue) reflect increasing circuit complexity, not the actual color of any input material—iron and copper are the only raw metals involved.
• A single Processing Unit, the component behind the most advanced research, ultimately depends on Red Circuits through the Green → Blue chain, making Red Circuit a hidden prerequisite for late-game progress.
• Red Circuit can be assembled in any tier of Assembling Machine; the recipe does not change, only the speed of the machine does.
• Because Red Circuit requires ten iron plates but only one copper cable, a factory optimizing for Red Circuit output will typically run iron smelters at roughly twice the rate of copper smelters.