As a macroscopic research for the interface of MMORPG(Massive Multiplayer Online Role Playing Game) in Korea, I have analyzed the introduction background & mutual characteristic of each interface according to the development shifts of MMORPG. The MMORPG of Korea, in the mid-1990s, was started while taking a foreign MUD (Multi User Dungeon) games, which used 'Text Interface' based on the keyboard. When Information and communication infrastructure was expanded in earnest in the late 1990s, Computer games interface was rapidly changed to GUI(Graphic User Interface) based on 2D graphic from text-based UI. So, Games of this period used the 'Point & Click Interface' that uses the mouse only to move character and carry out combat. Since graphic technology was changed to 3D in the middle of 2000's, The interface of MMOGPG for three-dimensional representation was naturally changed to 'keyboard control Interface' which used both mouse and keyboard. Recently, 'Action Control Interface' that was hardly used to MMORPG was appeared due to progress of game programming technology. And 'Diversity of play pattern' & 'Non-targeting' are attributes of 'Action Control Interface', which is differentiated with other interfaces.