The Marsh was a wound on the world.

  Miss Muffet tramped north through an avenue of ruined willows, their roots drowned in a pudding of spoiled whey and decomposed curd. Every step squelched, every exhale filtered through the sweet-ammonia haze that hovered knee-high and never quite dissipated. The air was yellow, the sun a dead bulb behind layers of suspended spore. Once, Stewart might have called this terrain “low-mobility”—now, even metaphor failed. It was just Marsh, rotting.

  The UI named the place VENOM MARSH, bolded and edged with a hazard stripe that tracked across her field of view. She didn’t need the warning. The cheesecloth mats here had gone necrotic, the upper layers melting into a gluey scum that bound to boots and made every step a wrestling match. The only respite came from the upthrust bones of rebar and tuffet frames, so covered in lichen they looked alive again.

  Her breath caught, and the fear gauge spiked. Even when she wasn’t watching it, she felt the pulse—orange, then red, then back to orange, cycling faster as she forced herself onward.

  “They changed the topography,” Stewart said, his voice the only straight line in the swirl of her thoughts. “Water table’s up. Spores are denser. You’re on timer, Norris. Don’t get fancy.”

  Muffet nodded, though she doubted it showed on the outside. The suit she’d cobbled together in the last reset was slick with sweat and curd dust. Still, she kept moving, pausing only to scrape samples into vials as she went. The new strain of fungus had a membrane so thin she could see the cytoplasm swim; the air above it fizzed with microspores, visible only when the wind caught them.

  Muffet ducked beneath a collapsed overpass—a bridge of some kind, now little more than a half-arch colonized by biofilm. The ground dipped here, and the whey pooled ankle-deep. It stank of old bleach and worse. She skirted the deepest puddle, using a fallen sign as a stepping-stone. The paint was nearly gone, but underneath, she could still make out the letters: “DAIRY PLANT - ALL VISITORS REPORT TO SECURITY.” She snorted. The only security here was the ever-present hunger of the Spider.

  The Marsh opened out into a clearing, ringed by the petrified stumps of what might have once been ornamental trees. The ground here was cratered, every divot filled with a sour-smelling slurry. She checked the minimap—a lie, but better than nothing—and saw the spiral overlay guiding her toward the clearing’s center.

  That was where she first saw it.

  The fungal golem.

  It did not appear all at once, the way a threat might in a horror film. Instead, Muffet saw the effect before the cause. There was a ripple at the edge of the clearing, a thickening of the spore cloud, then a tremor that ran through the ground like a dropped barbell. The curd bulged upward, fissuring along a seam of pale, wet cheese, and then something with arms—arms, plural, but too many for human—heaved itself out of the pudding and stood, hunched and leaking, in the yellow light.

  Her fear gauge slammed to red, and for a moment, the world was nothing but the pulse in her skull and the acid in her lungs.

  Stewart’s voice cut in, flat as always: “Steady your breathing. Four counts in, four counts out.”

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  She inhaled, counted, held. Exhaled, counted. The fear gauge ticked down. She did it again.

  The golem twitched. Its head, a mass of fused whey and fungus, rotated in a lazy arc. Eyes were implied, but not actual; the face was just a patch of bluer mold, ringed with teeth-like nodules of calcium. Its torso swelled and contracted, as if the air inside was fermenting at a dangerous rate. It took a step, and the foot sank four inches into the mire, then pulled free with a slurp.

  Muffet’s hands shook. She watched the tremor for a second, then remembered the skill unlock from the last run: “Steady Nerves.” She engaged it, thumb brushing the exile seal at her wrist. The effect was subtle, but real—the shaking stopped, and her thoughts went from panic to cold clarity.

  The UI updated:

  STEADY NERVES: FEAR ACCUMULATION REDUCED

  She wiped her palms on her coat and started to work.

  The golem was blocking the spiral’s center. Muffet needed a sample from the corruption at its feet, but the thing had already noticed her. It hunched lower, arms splitting along the seams, hands fanning out into root-like appendages that raked the mud for leverage. It was slow, but huge.

  “Circle around,” Stewart ordered. “Use the terrain. Look for weak points.”

  She skirted left, keeping to the higher ground where the curd was dry and the rebar stuck up like the ribs of a dead animal. The golem tracked her, but its feet were too wide for precision; every turn cost it traction. She moved in a low crouch, sampling a handful of marsh sludge as she passed a particularly colorful bloom.

  The air was getting worse. Every motion from the golem sent up a cloud of caustic, orange spores that stung the eyes and burned the throat. Muffet watched her health bar tick down, two points at a time.

  Muffet reached the far side of the clearing and scanned for an approach. The golem blocked direct access to the spiral. Still, the ground behind it rose in a natural ramp—a collapsed berm or drainage mound, now crusted over with brie-colored fungus. She could use it for elevation if she were quick.

  She made the dash, boots nearly losing traction in the first steps, then gaining as the substrate firmed underfoot. The golem lunged, but the mass of its own body made it slow to turn. She scrambled up the ramp, pausing only when she had a clear sightline on the target.

  The spiral was there—a depression in the Marsh, filled with a slurry of whey so clear it reflected the sky. At the bottom: a mass of blue-white fungus, coiled in a double-helix pattern that shimmered with every breeze. It pulsed, as if alive, and the air above it glimmered with spores.

  Muffet removed the sampler from her kit, loaded a fresh vial, and extended the telescoping rod. The moment the tip touched the surface, a wave of heat rolled up her arm—real, not just a UI trick. The golem howled, the sound low and resonant, and charged the mound.

  She didn’t flinch. She locked the vial, twisted it off, and sealed it in her pouch. Then she watched, waiting for the golem to close the gap.

  It hit the base of the mound and lost its footing, collapsing into a heap of pseudopod and melting protein. The mass shuddered, then reassembled, forming new limbs from the mud. It was trying to adapt, to learn.

  Stewart’s voice was a hammer: “It’s not immortal. You can break it, but not here. Prioritize the sample.”

  She already had. Muffet turned, slid down the far side of the mound, and took off at a dead run. Behind her, the golem shambled after, losing cohesion with every step. It was leaking now, chunks of itself dropping off and fusing to the landscape.

  She reached the safety of the willow line, then checked the HUD: health low, fear gauge yellow, inventory updated with “VENOM SAMPLE—MARSH STRAIN.” She allowed herself a breath.

  The golem stopped at the edge of the clearing, unable or unwilling to follow. It slumped, then split into three smaller blobs, each one pulsing with the same angry blue mold. They watched her, but did not pursue.

  Muffet crouched, braced herself on a fallen trunk, and pulled up the UI log. She tagged the sample, then checked the spiral at her wrist.

  It was glowing, faint but certain. The run would continue.

  Stewart’s voice, softer now: “You did well, Norris. But it’ll get harder. This place is just the perimeter.”

  She grinned, wiped her brow, and set off deeper into the Marsh.

  The world was not new, but it was hers, for now.