But this monster can only start operation if it is supplied with sufficient building material. This has to be delivered by crane and train. You have to steer all vehicles like the maintenance van, crane, tunnel drilling machine or the fire brigade. Processor: 2.0 GHz, Memory: 1024 MB, Hard Disk: 750 MB, Video Card: Geforce ATI Radeon up from 128 MB Windows 7 Home Basic, Windows Vista Home Basic, Windows XP Home