Have you ever heard the Net generation? They are who have been already adapted to use freely cyber space like e-mail. The net generation has specific cyber space and they also control that. In Korea, there are so many advertisements about online games. It targets the net generations. The Korean Ministry of Culture & Tourism have announced that the scale of online games is about 3 trillion four thousand million dollars. Also online game users are about 25 millions and 5 percent of them are already addicted playing games. Moreover, 20 percent of them are our children who have to study. Online game is that computer game which needs exterior equipments such as telephone, modem or cable. With one of those equipments, you can connect the internet then you can play online game contemporarily in different connecting places. In Korea, “the game producing company NC soft made the online role-playing game which is Lineage in 2000. It is one of the most famous online games in Korea. The lineage has 2 million game users and same time connecters are more than 20 thousand users.” (Mud4u 2004) It is miracle statistic which never was happened. The feature of online game is that people are playing game through the internet so they are playing at same time in same space. It attracts more and more online game users.