These are the Forest Expansion rules for Dark Force Incursion (DFI), a roll and write game that is for one person, taking 20 to 40 minutes to play. This expansion deals with the addition of the forest hex tile to the game. Forest tiles are never written in. They present an opportunity to take short cuts to new areas of the map and yet can result in your army being lost if the area is busy. You will never see a dark army emerge from a forest. -description from designer