As you may guess from the name of the game, it is composed of adventures to find the lost city/land of Atlantis. The background consists of the real world, i.e. Eurasia and etc. For example, you can see the real landmark such as Angkor Wat and play in the background of these and dungeons found within the game. The most exciting part of Atlantica is a 'battle' which applies a turn method. In the turn method, you can control 9 members and make 27 vs. 27 large battles by making parties with other users.