Cultivate a living fungal web beneath the forest floor. Spin a 5x5 subterranean soil grid, root symbiotic synergies, tame toxic threats, and survive rising seasonal quotas to achieve Old Growth.
Every spin presents tactical choices: root high-multiplier catalysts, siphon rotting logs, or cleanse spreading blight before winter arrives.
Draft from 44+ distinct fungal species, mycorrhizae, decomposing flora, and mineral catalysts. Trigger explosive adjacent synergies and chain reactions.
Navigate the gentle blooms of Spring and Summer before the unforgiving chill of Autumn and Winter. Balance current biomass payouts with long-term survival engines.
Spend precious root charges to anchor vital symbols across spins, evolving baseline fungi into legendary ancient strains with elevated multipliers.
Subterranean soil is alive and perilous. Tame or cleanse rival mold, drought, parasitic blight, and chemical pesticides before they choke your root network.
Chart your path across diverse forest biomes. Risk hazardous cursed routes for massive spore yields, or pay tribute to carry engine seeds into next seasons.
Unlock new starting strains, permanent mechanics, and mutation boons across a vast non-linear spatial radial tree. Meta adds infinite variety, not sheer power.
A dark, bioluminescent art style paired with tactile haptics and smooth portrait-first gameplay.
In Mycelium: Old Growth, every run is an organic puzzle. There is no concept of "defeat"—when winter claims your mycelium, you enter Dormancy, harvesting spores to bloom new strategic branches in the Overgrowth.
