The 'Shutdown' system was a controversial bill and with unanimous votes it passed through the Legislation and Judiciary Committee in Korea. The bill became law and the 'Shutdown' system was implemented to all games. Restricting game play of users who are under the age of 16 between midnight and 6 AM.
Now, the Ministry of Education, Science, and Technology has introduced a new bill, the 'Cooling Off' system to strengthen their goal to combat game addiction.
Cooling Off system
All minor users who play a game for more than 2 hours will automatically disconnect from the game to ''cool off'' for 10 minutes. After the cooling off period of 10 minutes is over, you are allowed to reconnect 1 more time. Thus restricting you to 4 hours of game play each day.
Developers and publishers who do not implement the 'Cooling Off' system into their game will be punished. Punishment can be up to three years of imprisonment or be fined 30 million KRW.
I found this recently uploaded video on YouTube, it might clarify some stuff to you about what's going on in South Korea related to gaming right now...