Mycelium Network

Lore & Background

Deep beneath the ruins of civilization, the mycelium network thrives in a state of constant, silent communication. This biological web does not merely link hosts; it processes information gathered from every infected individual across vast distances. When a runner encounters a human trap or a new barrier, that data is instantly relayed through the roots to nearby stalkers and clickers, allowing the swarm to adjust its tactics immediately. The fungus effectively learns from human resistance, evolving its physical manifestations over time to counter specific threats. The network's influence extends beyond simple coordination; it dictates the lifecycle of every infected host. It determines when a runner should evolve into a stalker or when a stalker must transition into a clicker based on environmental stressors and the colony's needs. This centralized control explains why infected often move in synchronized waves rather than as chaotic mobs. The bloomer, acting as a localized server for the network, anchors these connections in a specific area, releasing spores that bind new hosts to the collective will while maintaining the structural integrity of the fungal web.

In Their Own Story

The silence in the abandoned subway station was heavy, broken only by the dripping of water and the wet, ragged breathing of something unseen. Elias pressed his back against the cold tile, watching the shadows shift. He didn't see individual creatures; he saw a single entity moving through many bodies. As one runner lunged from the darkness, two others flanked him with perfect timing, not because they had planned it, but because the network knew exactly where Elias would try to run. The air hummed with a low vibration, the sound of millions of fungal threads firing signals underground. When Elias fired his flare gun, the light didn't just blind them; it sent a shockwave through the mycelium, causing every infected in the tunnel to recoil and regroup instantly. They were not fighting as monsters, but as one mind with many hands.

Reader's Guide

The infection progresses through distinct biological stages driven by the fungus's need for propagation. Initially, a human inhales spores or suffers an open wound exposure, entering the incubation phase where symptoms are mild and hidden. As the fungus consumes the host's nervous system, they become Runners: fast, aggressive, and disoriented. They retain some motor function but lack higher cognition, driven purely by instinct to spread spores through biting. Over months or years, the fungal growth thickens around the skull and vocal cords, creating Stalkers and Clickers. These evolved forms lose sight but gain echolocation capabilities, allowing them to navigate pitch-black environments with precision while coordinating via the mycelium network. The final stage is the Bloomer, a massive, immobile host that acts as a spore factory. The fungus completely consumes the body's internal organs, leaving only a bloated exterior that releases clouds of infectious spores into the air. This lifecycle ensures the colony expands rapidly while adapting its physical forms to survive human countermeasures.

Did You Know?

• The mycelium of certain fungi, like the polypore fungus Fomes fomentarius, has been reported throughout history as a biomaterial.
• Bits of fungus preserved in peat have been discovered at the Mesolithic site of Star Carr in the UK, modified presumably for starting fires.
• The 5,000-year-old remains of Ötzi carried Fomes fomentarius on a cross-alpine excursion before his death and subsequent ice-entombment.
• Mycologist Paul Stamets famously wears a hat made of amadou, a material derived from the tinder polypore Fomes fomentarius.
• A wall pocket originating from the Tlingit people, displayed at the Hood Museum of Art, turned out to be made of mycelium from the tree-decaying agarikon fungus.