Concerto Gate is a free-to-play MMORPG (massively multiplayer online role-playing) and a sequel to Cross Gate. It continues the theme of its predecessor along with boasting an updated game system and improved graphics. Concerto Gate introduces a unique feature called the "terra-generating" system. This innovative system constantly changes the topography of the game world. For example, players can dig in the ground to mine for minerals, and after digging for a while, small holes will eventually become giant holes. Forests can be demolished, and new mountains can be formed depending on interaction between players. Large-scale terrain changes will not occur in a day or two, but will be gradual. Players will most likely see changes over several weeks. Also, random encounters with monsters are prevalent in Concerto Gate. Similar to traditional RPGs, players exploring the map can be ambushed at any time by enemies.