Abstract
Digital game and its related circumstances have become complicated year by year. Furthermore, influence of digital game on other fields and existences such as serious game for social problems, application of game engine’s for non- game development and the so-called game addiction relating to human. If these complicating systems can be considered as is the case in natural ecosystems, digital games can be as “meme” replicating entity (that like a life form based on “meme”, not on gene). In this paper, digital games as “meme” replicating entity by “meme” is discussed for future game science.