The game puts a heavy emphasis on exploration, as the world of Nightingale is separated into many different realms that are connected by portals.
Biomes revealed through gameplay footage, revealed or teased through official material and concept art include:
Realms become more and more difficult as you progress. Realms are about two-kilometre by two-kilometre blocks. Realms Can be accessed by using the Portal Network. Portals are activated The use of realm cards