Ivy consists generally consists of four parts:
- An Ivy Root, the only part which counts as a kill.
- An Active Ivy, which can kill the player as well as expanding the structure.
- An Ivy Branch, which leads up to the active part.
- Dormant Ivy.
A fifth part called Dead Ivy can also be created by destroying it with lightning.
The active part of ivy changes branches each turn, moving clockwise, and destroying an ivy part also removes all parts growing out of it, thus destroying the root kills the whole plant.
The root often covers a treasure.