“Childhood online” which is excellent in its game engine, is the only existing MMRPG game product in the marketplace incorporating 3D technology and cute style. It has overcome many technical barriers that other game products of similar categories are incapable of conquering. Six game roles with cute appearances and cool outfits enable players behind the roles to display charm in their personality. The changeable weather system and romantic scene invite players to involve in the game. With the company of cute pets, players won’t feel lonely at any time. With the inlaid magic cards and refined outfits, the game offers players a sense of incomparable success. The class system with childhood tone and marriage& household system will perfectly combine into a integrated social system, making “Childhood online” be a real virtue world.