Abstract
In this study, we developed a technique of generating the behavior of the game avatars by the simulation of free fight
between plural avatars in order to represent inartificial battle scene. The proposed method uses the model that each avatar behave autonomously depending on the surrounding environment instead of the large number of the conditional branches to generate irregular motion without artificiality. Here, the surrounding environment of the avatar consist of the information of the terrain and enemies/friends identification around the avatar. This technique uses the potential method to generate the behavior of the avatar. The avatar decides its action by the surrounding potential field that dynamically changed by the situation around the avatar.