The lie sat easier than it should have.
Aaron had learned that about himself sometime around hour six of the beta stress-test, when the System had been rewriting his memory in real-time and he'd kept filling out bug reports anyway. Compartmentalization wasn't a skill. It was just what happened when the alternative was useless.
He pulled on his jacket in the grey pre-dawn, left arm slow to cooperate, the elbow joint stiff in a way that had nothing to do with sleep position. The cold had gotten into it properly overnight. He flexed the fingers twice, watched them respond with a half-second delay, and decided that was acceptable. The scab on his right palm caught against the jacket lining and he let it. Pain was data.
He told the first person who stirred—someone shifting under a blanket near the tent's eastern edge—that he was getting firewood. He said it quietly, with the mild, slightly apologetic tone of a man who woke early and felt guilty about it. The figure made a sound that wasn't quite acknowledgment and wasn't quite sleep. Aaron stepped past the activation rune panel, noted the amber pulse was holding steady, and walked out through the boundary.
The temperature differential hit him at the perimeter. Six degrees, maybe seven. The Safe Haven bled warmth at the edge like a cut bleeds, gradual then nothing. Outside, the Olympic Forest had the quality of old stone—dense and indifferent, the canopy so high it created its own weather system at ground level. Mist sat in the root hollows. The old-growth trees didn't creak in wind the way younger trees did. They absorbed it.
He found the firewood excuse useful for approximately ninety seconds, which was how long it took him to gather a realistic armload of deadfall from the perimeter and cache it against a nurse log where he could collect it on the way back. Then he moved.
The Rockroot Crawlers occupied a section of forest floor roughly forty meters northeast of camp, in a low depression where the soil had a reddish-brown mineral tint that he suspected was a System-placed biome marker. He'd clocked them on the walk back last night—peripheral movement, the specific kind that wasn't animal because animals didn't loop. These looped.
He found his vantage point in the fork of a fallen cedar, the bark long since gone to moss, the wood underneath compressed to something closer to stone. It held his weight without sound. He settled into it and went still.
The first Crawler was eleven meters out. Roughly the size of a large tortoise, if a tortoise had been designed by someone who'd only heard tortoises described over a bad phone connection. The shell was a compressed mass of root-fiber and mineral deposit, the legs moving in a slow, deliberate eight-point pattern that threw a slight asymmetry every fourth step—left-rear leg pulling slightly short. It moved in a rough oval, approximately twenty-two meters at its widest.
Aaron counted under his breath. Not the words. Just the rhythm.
He pulled a strip of bark from his pocket—he'd peeled it from the nurse log, force of habit—and scratched a mark with his thumbnail. One circuit: four minutes, seventeen seconds. He scratched it again on the next pass. Four minutes, sixteen. The half-second variance was either environmental friction or as close to randomized as the System bothered to get for a mid-tier environmental mob.
Legacy asset, he thought. Same engine as the Sap-Vine. Same load fingerprint.
He watched the second Crawler emerge from a point roughly three meters east of where the first had first appeared. Not the same point. Close, but measurably not the same. He marked that.
The respawn timing was harder to clock without a reference death, but the third Crawler appeared at the six-minute mark from his initial observation, and the fourth at eleven minutes, and the gap between the two suggested a staggered queue rather than a single timer. They weren't spawning from the same node. They were spawning from a node that was distributing load across at least two sub-points.
Which means there's a capacity ceiling.
He watched the pathing loops overlap. Watched the Crawlers navigate each other without acknowledgment—no aggro, no territorial behavior, just parallel processing on separate tracks. The asymmetric left-rear leg on Crawler One was consistent across every circuit. Not damage. Not variance. A geometry artifact baked into the asset itself.
The mist was burning off in patches where the canopy thinned. Somewhere behind him, the forest floor made a sound like a knuckle popping—thermal expansion in a root system, nothing more. He didn't move.
He scratched the last of the timing marks into the bark strip, seven data points in his personal shorthand, the notation compressed to something that would look like idle carving to anyone else. He read it back once to confirm the sequence, then folded the strip along the grain and tucked it into his inner vest pocket, behind the fake notes.
The morning had aged by the time Aaron trusted his numbers.
He'd spent the first two hours doing what anyone watching from camp would have seen: a cautious scavenger picking through deadfall, snapping branches at the knee, stacking them in the crook of his left arm. The arm was still slow from the cold, fingers responding a half-beat behind intention, but the motion was rote enough that it didn't matter. His attention was elsewhere.
It was in the intervals.
The Crawlers moved in loops. He'd confirmed that much in the previous session, but confirmation wasn't the same as measurement, and measurement was the only currency that mattered in QA work. So he'd counted. Paced the loops against his own breathing. Cross-referenced the leg asymmetry—that slight drag on the rear-left limb—against the respawn timing, checking whether the defect was cosmetic or load-bearing.
It was cosmetic. The lag in the leg didn't affect pathing. It was just a texture artifact baked into the spawn template, copied faithfully across every instance. Which meant the node wasn't generating unique entities. It was stamping copies.
Stamping copies from a template with a fixed capacity ceiling.
He filed that away and kept counting.
The critical number revealed itself just past the second hour, when four Crawlers converged near a cluster of exposed root systems roughly thirty meters northeast of his current position. The fifth arrived ninety seconds later, drawn by whatever proximity logic governed their pathing. Aaron went still behind a moss-furred cedar trunk, breathing shallow, watching.
The sixth spawn didn't come.
He'd expected a delay. What he got instead was something he felt rather than saw—a faint wrongness at the periphery of his perception, like a word on the tip of the tongue that never arrives. The air didn't shimmer. Nothing visually stuttered. But somewhere in the substrate of his awareness, the part of him that had spent months in pre-release environments learning to feel system states rather than just observe them, something skipped.
A missed frame. A dropped packet. The system had tried to execute a spawn call and found the local node over-capacity. The sixth Crawler simply hadn't loaded.
And for approximately two seconds, the forest had a seam in it.
There you are.
He didn't move immediately. He let the Crawlers disperse naturally, tracked them back to their loops, and waited until the cluster dissolved below four. Then he walked to the root cluster, slow and deliberate, the firewood stack still balanced in his left arm because abandoning it would look wrong to anyone tracking his behavioral signature.
The trigger zone was roughly ten meters in diameter. He paced it with his eyes rather than his feet, using the root cluster as a center point and identifying the natural landmarks at the boundary: a split-bark alder at the north edge, a depression in the soil where water had pooled and frozen into a shallow lens of grey ice at the south, a standing deadwood snag at the east.
He needed a marker he could find again in low light without looking like he was navigating to a specific point.
The alder was the best candidate. It was at the edge of the trigger zone, not inside it, which meant approaching it wouldn't accidentally begin the ninety-second clock. He set his firewood stack down against the base, crouched as if checking the bark for dry wood, and used the edge of a thumbnail-sized piece of flint from his vest pocket to drag a shallow horizontal scratch across the bark at knee height. Not a symbol. Not a notch. Just a line that looked like weathering if you weren't looking for it, and looked like a coordinate marker if you were.
He ran his thumb across it once to confirm the depth—shallow enough to miss, deep enough to find—and stood.
The Crawlers continued their loops. The forest continued its morning business of slow cold and dripping bark and the distant percussive knock of something working at a high branch. None of it acknowledged what he'd just confirmed.
Five bodies. Ten-meter radius. Ninety seconds. Sixth spawn call fails. Node throws an error it doesn't know how to log.
He picked up the firewood stack and took three steps back from the alder, putting himself at the center of the trigger zone in order to look at it from the inside. The root cluster sat at his feet. The boundary landmarks sat equidistant around him. The scratch on the alder was invisible from here, which was correct.
The exploit sat in his mind fully assembled: a precise geometry, a specific duration, a predictable failure state. Not a theory anymore.
A blueprint.
He stood there for a moment, the cold working into his left arm, the flint back in his vest pocket, the firewood balanced and real and deliberately mundane in the crook of his elbow.
Then he stepped back from the marked tree.