A long association
Mahjong's scoring systems evolved partly to settle money, and the game has long been associated with gambling. That association led to bans and restrictions at various times, including in the early People's Republic.
Licensed and regulated
Some places license mahjong venues. Hong Kong's parlours operate under licence, and Japanese parlours operate within the country's rules on games of skill. In many countries, social games among friends are treated differently from commercial gambling.
Playing without stakes
Clubs, schools, tournaments and many families play for points only. The game loses none of its interest, and newcomers often prefer it.
Know the rules
Laws differ widely and change. This site does not give legal advice: check the rules where you live before playing for money, and keep games friendly and within everyone's means.
