Mutualist

Forest network

Mutualist is a PC idle game about building an underground resource network between trees. You draw connections tree by tree, starting with one tree and little to spend, then connect others so they can trade Carbon, Phosphorus, Water and Spores. The forest continues trading while you’re away, and returning doesn’t bring a punishment.

Each resource moves where it’s needed: Carbon goes to growth, Phosphorus to spread, and Water to thirsty trees. Your choices shape the network as it grows, while seasons and threats interrupt its progress without turning the game into a timer you have to beat.