Mahjong has been a common culture of China, Hong Kong, Japan, and other Asian regions. It shows a high degree of influence from Chinese culture.
Hong Kong
In Hong Kong:
However, Mahjong games also create problems. Addiction to Mahjong is a common type of problem gambling. Mahjong is also a favourite medium for bribery - the person giving the bribe will intentionally lose large sums of money to the person being bribed. Recent studies also suggest Mahjong can cause epilepsy
References
Mahjong culture Wikipedia(Text) CC BY-SA