MYCOCOSM is a casual arcade shooter and resource manager where you take the role of a newly sprouted seedling. Fight off waves of soil-borne enemies using antimicrobial chemicals, and trade for precious nutrients with wandering fungal spores - but beware their deceitful dealings.
We are not affiliated with IsThereAnyDeal.












Mycocosm represents the conflict that constantly rages beneath your feet - where resources are traded with unscrupulous dealers, battles are fought with endlessly reproducing enemies, and where chemical warfare is fought with terrifying frequency; all within a few grams of soil.
As a plant, your objective is simple: survive and grow. To do so, you'll need access to phosphorous and nitrogen, two difficult to find yet vital elements. Fortunately, wandering fungus spores will trade you these resources in exchange for access to your carbon. Everything comes at a price, however, and these fungi will take what they can and exploit you where possible.
Each spore offers a roulette wheel of possible trades - some generous, others stingy, and a few just plain unfair. Quick reflexes and wary dealings will be your only chance against the trading onslaught. Every exchange has a trade-off: how much carbon are you willing to sacrifice for these precious, precious nutrients?
Once you are well-established, it won't be long before enemies home in on your roots. Pathogenic bacteria will be drawn to your seedling, and they'll gather in great numbers to extract what they can. Your only hope resides in the antibiotics released by fungal allies. As always, nothing is free in the soil. Grow a strong root system to maximize your carbon supply, or grow leaves to increase your carbon income.
Whatever you do, don't hesitate. The microbial marketplace waits for no plant.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.












Mycocosm represents the conflict that constantly rages beneath your feet - where resources are traded with unscrupulous dealers, battles are fought with endlessly reproducing enemies, and where chemical warfare is fought with terrifying frequency; all within a few grams of soil.
As a plant, your objective is simple: survive and grow. To do so, you'll need access to phosphorous and nitrogen, two difficult to find yet vital elements. Fortunately, wandering fungus spores will trade you these resources in exchange for access to your carbon. Everything comes at a price, however, and these fungi will take what they can and exploit you where possible.
Each spore offers a roulette wheel of possible trades - some generous, others stingy, and a few just plain unfair. Quick reflexes and wary dealings will be your only chance against the trading onslaught. Every exchange has a trade-off: how much carbon are you willing to sacrifice for these precious, precious nutrients?
Once you are well-established, it won't be long before enemies home in on your roots. Pathogenic bacteria will be drawn to your seedling, and they'll gather in great numbers to extract what they can. Your only hope resides in the antibiotics released by fungal allies. As always, nothing is free in the soil. Grow a strong root system to maximize your carbon supply, or grow leaves to increase your carbon income.
Whatever you do, don't hesitate. The microbial marketplace waits for no plant.
MYCOCOSM is a casual arcade shooter and resource manager where you take the role of a newly sprouted seedling. Fight off waves of soil-borne enemies using antimicrobial chemicals, and trade for precious nutrients with wandering fungal spores - but beware their deceitful dealings.
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.