MMORPG world is created as unreal world by massively multi players. Any player are given the liberty of the world to consume various contents in MMORPG world. This is a story environment that a developer must keep observation on players\' act and update story contents in step with players\' speed to consume contents. It is important thing to update story contents. An event dungeon is one method to update story environment. Recently it has been accepted as general method. And it is often used as various forms: an event dungeon and a theme dungeon. This study is about place storytelling of an event dungeon. A place storytelling is a strategy to make attractive place adding special theme or story. An event dungeon is a kind of place storytelling like theme park. It can hold placeness to take theme for this dungeon. The method to take placeness can be divided into three parts. First, it is a environment to present story. Second, players experience the environment by certain route. It is a very exclusive space, however this route is a fixed line. And finally players can find out a peculiarity of this space by both an distance between NPCs and metamorphosis of character. This place storytelling can make an event dungeon as own story environment. So it helps out updating game world environment. Key words: Game updating, An event dungeon, Place storytelling