In addition to being scatter, area, or obstacle terrain, a terrain feature is also open, difficult, or impassable.Open terrain represents parts of the battlefield that are relatively easy to traverse and free from obstacles or obstructions. Open fields, lamp posts, planters, tall grass, or sandy desert are all open terrain. Open terrain does not restrict movement.Difficult terrain restricts but does not completely prevent movement. Craters, ruins, woods, piles of rubble, and swamps are all examples of difficult terrain. Difficult terrain reduces the maximum speed of a unit moving through or into it by 1 to a minimum of 1.Impassable terrain completely prevents movement. Miniatures cannot move through or end a movement on impassable terrain unless they have a special rule which allows them to do so.Some larger and more complex pieces of terrain are made up of various parts that each restrict movement differently. For example, the walls of a piece of obstacle terrain may be impassable, but a miniature may be able to move through a door or window that is open terrain. Players should discuss the parts of terrain and agree on how they are to be played before the game begins.In addition to being scatter, area, or obstacle terrain, a terrain feature is also open, difficult, or impassable.