🍄 Mycelia

Unofficial fan-made web adaptation of the board game by Split Stone Games.

Grow your mycelium. Outspore your rivals.

Human players

Add the Automata as an extra player

Solo mode: you face the Automata. Black wild tiles are removed from the bag.

This is a free fan project implementing the game's mechanics with original visuals. All rights to Mycelia belong to Split Stone Games — please support the real game!

Pass the device

It's 's turn.

How to play (quick summary)

Goal: score the most points by growing (fruiting) mushrooms, collecting insects, and being the one to trigger the end of the game.

Your turn: take two different actions:

Move — shift your Mother mushroom up to 2 tiles (never onto/through another Mother). Landing on or passing a tile with an insect claims it.
Explore — add a random tile from the bag to any open edge of the board. Insect tiles get an insect token.
Spore — pick your Mother (2 cubes) or one of your fruited mushrooms (cubes shown on its card, max twice per mushroom). The wind die decides which flat edge the spores drift across: the first cube lands on the source tile, the second on the tile across that edge, and each further cube on a tile sharing a flat edge with the previous one — you choose whenever there is more than one option. Spores that blow off the board are lost.
Fruit — pay a card's cost using spores that are connected in one network (your spores, Mothers and mushroom tokens link tiles; rival pieces cut them). A piece standing on a tile controls all spores there, even rival ones. Black tiles count as any colour. Place the new mushroom token on a tile you spent from; score the card's points immediately. Spent spores return to their owners' supplies.
Discover — take one of the 3 face-up market cards, or gamble on the top of the deck.
Decay — after a mushroom has spored twice you may retire it: the token returns to your mat, the card slides underneath, and you gain its decay bonus (instant effects, permanent upgrades, or mat upgrades for future mushrooms grown there).

Blocking: a rival Mother standing on your mushroom stops it from sporing or decaying.

Insects are free actions on your turn: 1 insect refreshes the market; 2 insects move any opponent's Mother to any tile without a Mother. Leftover insects score 1 point per 2 at the end.

Game end: the moment a player has at least one decayed card under all five mats, the game ends immediately and that player claims the 5-point end token. Highest total wins (ties: most mushrooms grown, then most insects).

Digital adaptations: wind symbols are fixed per edge and printed on every tile (◯ = horizontal edge, ∪ = left, ∧ = right — the rolled edge lights up while you spore); spore spending for fruiting is chosen automatically (preferring rival spores); the solo Automata follows the rulebook's FRUIT > DECAY > SPORE > MOVE priority in a streamlined form.