Simutrans 128

Simutrans is a free transport and economic simulation game. In Simutrans you can build the railroad networks with platforms, discharging quays, level crossings, signals and much more. The player can make their own bus company, transport people throughout the city and help make cities grow by laying out bus routes. Trucks drive around with all kinds of goods and supply the bookstore with new books, take wood to the furniture factory and much more.

download: http://128.simutrans.com/play.php