Collection: Area Movement
The game board is divided into irregularly shaped areas to determine adjacency and movement.
This can be contrasted to point to point movement (which may be isomorphic to area movement but does not have to be) and grid movement (which uses regular shapes).
An example of point to point maps not being isomorphic to each other would be a map of Europe with air travel. France and Ireland share no borders and would not be adjacent on an area map but a point to point could easily contain an air route.
