Casino operations and lotteries run by the New Zealand Lotteries Commission are treated as separate classes within the Act. Classes of gambling range from Class 1, representing low-stake, low-risk gambling, to Class 4, which represents high-risk, high-turnover gambling. The Gambling Act 2003 classifies gambling based on the amount of money spent and the risk of problem gambling associated with an activity. Services › Casino and Non-Casino Gaming › Classes of Gambling