In SDGO there are four types of terrain: * Ground * Air * Water * Space A few maps have a combination of terrain (e.g.: any land map has airspace above it, water is usually found near land). Some will have a certain terrain suited to them, this is listed in the "Topography" section on the unit pages. Topography does not work on the principle of one countering another. Instead units in their listed environment will have an increased performance, conversely units outside of their listed environment will has a decreased performance.