Polluted Mud

Lore & Background

The Ficsit Network left more than just alien megastructures on this world. Scattered across the landscape are traces of its industrial processes—chemicals, hydrocarbons, and heavy compounds that seeped into the soil millennia before any human boot ever touched Ficsit. Polluted Mud is what remains: a dark, greasy sediment that clings to the ground in thick patches, often found where oil has pooled and oxidized over geological time.

The Ficsit Corporation's early survey logs, as pieced together by players, reference these contaminated zones as 'Grade-2 substrate anomalies.' The Network clearly processed vast quantities of organic and petroleum materials, and the residue it left behind persists in the earth. For a new factory worker on Ficsit, these patches are both a hazard and an opportunity: the mud is toxic to handle without gloves, yet it can be refined into usable building compounds.

There's a quiet poetry fans appreciate in this resource. It's the game's way of saying the world was here before you, was working before you, and left scars you can now turn into bricks. Every bucket of Polluted Mud you shovel is a small act of reclamation.

In Their Own Story

The rain on Ficsit doesn't wash things clean. It just makes the mud slicker, darker, more insistent. You crouch at the edge of the oil-stained basin, your harvester whining softly behind you, and press your gloved hand into the sludge. It's warm. It always is, as if the ground is still digesting whatever the Network fed it a thousand years ago. You pull your hand free, leaving a dark smear on the glove, and watch the harvester's tines bite into the muck with a wet, sucking sound. The conveyor belt behind you is already full, already humming, already turning the planet's old wound into something you can stack into a wall. You almost feel guilty. Then you don't. You've got a factory to build, and the mud isn't going to lay itself.

Reader's Guide

Polluted Mud is harvested from dark, oily patches of ground found near oil wells, around the bases of abandoned refinery structures, and in low-lying basins where crude seepage has stained the soil. Look for the telltale black-brown discoloration in otherwise grassy or rocky terrain—often near the Tier 1 and Tier 2 oil extraction sites.

Collection is straightforward: a standard Harvester placed on the mud patch will extract it continuously, or you can harvest by hand for small early-game batches. No special tools are required, though wearing gloves (or just accepting the sticky residue) is the Ficsit way. The output feeds directly into Mud Brick production, which in turn supports early construction and certain crafting recipes. In a broader automation chain, Polluted Mud sits at the very front of the pipeline—raw, unrefined, and abundant enough that it rarely becomes a bottleneck.

Its tier is firmly early-game. You'll outgrow it quickly as you unlock cleaner Mud sources and more advanced materials. But there's a specific joy in watching your first little harvester loop chug along, scooping up the planet's grime and feeding it into a neat little stack of bricks. It's the 'hello, world' of Satisfactory automation: small, self-contained, and deeply, stubbornly satisfying.

Did You Know?

• Polluted Mud is visually distinct from clean Mud in that it has a darker, oilier appearance, making it easy to spot in the field by its greasy sheen.
• The polluted patches where this resource spawns are often clustered near oil wells, creating a natural early-game 'oil district' that players can zone their first factory around.
• In the Satisfactory community, the act of building your first automated mud-harvesting loop is a rite of passage—many players screenshot their initial conveyor setup as a milestone.
• The Ficsit Network's ancient industrial processes are the in-universe explanation for why certain ground areas are chemically contaminated, tying a mundane resource to the game's deeper lore.