Blizzard Entertainment made waves last year when it announced that Diablo III would be supporting real-money trading (RMT) through its in-game auction house system. While it proved to be a divisive topic among fans, apparently it was too much with the South Korean rating board, which sees such activities as potentially violating the country's anti-gambling rules.
The board was quoted as saying that "the feature involving for-cash trades between users was not included in the presentation to the rating committee, and therefore it was not subjected to any scrutiny."
To appease the board and pave the way for release, Blizzard has dropped the RMT auction house for the Korean version. The ratings board has warned the company not to sneak in the feature in a future patch and gave the title an 18 rating for the country. Interestingly enough this makes South Korea the first country to slap a rating on Diablo III to date.