The mobile content which adopts the subject matter of wired online game with interoperability element is in service. This is one of the plans which are the possibility of benefiting wired online game in game industry. In this paper, interoperability method of game content between wired and wireless classifies this with three branches and it tries to analyze the interrelationship of the interoperability element and interoperability types adopted in many wired online games. And, the development of interoperability server is composed of mobile server which takes charge of I/O process of mobile device and game server records all information of users in the game. With developing the content which is suitable in specific game(Ran-Online), this paper presents the development method of game content through interoperability between wired and wireless.