Part of Mayfair's line of train crayon-rail games. Here you can make deliveries to any part of the moon, which is why they used the double-hemisphere map. You can connect from the edge of one map to the corresponding point on the other hemisphere's map.One addition to the events are meteors. When they strike, any rail connect to the point they strike or connecting to any of the 6 dots around that are destroyed. Other events include Decompression, Solar Flares, and Cosmic Rays. - BoardGameGeek