As a 3D online turn-based MMORPG produced by Ndoors, Atlantica was once granted as the “Best Overseas online game” in the Golden Plume Award of ChinaJoy 2008 and was ranked No.1 in online game popularity voting in North-America.

The world of Atlantica Online features real world locations mixed with mythological and fantasy elements. Countries are represented with such cities as Harbin, Rome, and Sapporo being featured as cities where one can visit. Though the locations on the map feature climates similar to their real world counterparts, the architecture is often a generic recreation of well known structure types, such as the cities in Eastern Europe and Japan. Rome also takes on a big role as a real world location, resembling the ancient city of Rome as is well known from its period of conquest as the Roman Empire.

The Character & Mercenaries system is regarded as the most innovated features of Atlantica. As the character gains levels, it can control up to the maximum of eight mercenaries, which makes for a party of maximum size nine. Players also can store additional mercenaries in mercenary rooms.