Arctic Baron

The Viking Union has a very dominant role in your society, as they control the vast railway networks. Could they be to blame for the disappearance of the sun and the resultant ice age? As a train captain, you must find out and overthrow them. Arctic Baron is a strategic trading and combat game. You must keep your train running and make sure there is enough fuel. When you reach towns you can trade with local people, with each city having a primary function. (mobygames.com)