Introduction

Game market is one of the industries that is growing while recording the steepest uptrend throughout the world. It has made progress of unprecedented growth up to now, and it will continuously make progress in the future, too. But, there is a key factor that disturbs its steep growth. It is ‘the immobility of assets between games.’ The problem a number of gamers who enjoy online game suffers is that they cannot move the asset from the game they were playing originally to another game ‘freely.’