Complex sentence: A CRPG often provides several different layers of travel in the form of localized maps in buildings, towns, or dungeons, as well as an overworld with a world map, often used for traveling between countries, continents, or planets.
Split into simpler sentences: A CRPG often provides several different layers of travel in the form of localized maps in buildings, towns, or dungeons, as well as an overworld with an associated map. At the widest levels, an overlying world map is often used for traveling between countries, continents, or planets.