While sales of Capcom's gory zombie-killer Dead Rising have done remarkably well here in the United States, even with a Mature rating from the ESRB, in Japan where the game was recently released, copies of the games are hard to find.
As a result of recent changes to the rating system for videogames used in Japan, sales of Z-rated games - those that can only be sold to persons 18 years old and above - are being strictly enforced. Prior to the changes, ratings were used merely as guidelines to inform purchasers of the intended audience of a game.
