A solitaire railway building game consisting of 18 turns, in each of which you fill two hexes with passenger rails and stations, goods rails and factories, plus forests and spoil heaps. Each turn you roll 7 dice, 4 blue and 3 red. The blue dice are used for passenger lines and stations; the red dice are used for goods lines and factories. You may also use dice to purchase modifiers for use in future turns, including extra dice. You will gain points mainly for connected stations and factories, but also for a long passenger route and a large group of connected factories. However, you lose points for being forced to place spoil heaps. —description from the designer