You are a fungus! Your objective: Consume all of the cells around you without running out of energy.

Each turn, discard one card and play another before drawing back up to three. Play a card for its unique ability, or to start a phase of secreting enzymes or extending your hyphae network.

Secrete enzymes to cumulatively break down the cells around you to consume, at the cost of 1 energy per secretion. Gain energy (to the energy cap of 10) by consuming cells. (For each cell, the energy available is the same as its resistance to enzyme: the number of sides of the shape inside the cell.)

Neighboring cells with the same shape form a tissue. Enzymatic secretions spread through tissues if applied to already-enzymated cells. Consume a tissue fully for bonus energy. Extending your network of hyphae (tendrils) through the matter you're growing on expands your reach for secreting enzymes and costs 2 energy per segment.

Card Reference:

(Note that a random card will be unavailable in each game, and which cards enable entering the secretion phase and which enable entering the extension phase is also randomly determined on a per-game basis.)

Proliferate: Add five (or four) hyphae to a random cell with one (or two).

Bruise: A random cell, & neighbors, breaks down easier (as if secreted into).

Cellulose: All hyphae tips secrete into triangle cells, if they can.

Hemicellulose: All hyphae tips secrete into square cells, if they can.

Pectin: All hyphae tips secrete into pentagon cells, if they can.

Lignin: All hyphae tips secrete into hexagon cells, if they can.

Small-Tissue Eater: In hand: one extra energy consuming a single-cell tissue.

Growth Expert: In hand: when you extend your hyphae network, it will extend itself elsewhere.