The world game industry, especially the mobile game market, has grown rapidly in recent years. One of the interesting characteristics of mobile game performance is that its lifetime is remarkably short compared to that of online games and most downloads are peaked in the early period of the...

This paper offers a look at the Japanese mobile free to play market with a focus on "Gacha", a game of luck mechanism used in many Japanese games. The paper tries to explain about the concept of Gacha, its different forms, some known regulation issues and briefly looks at player and...