Lottery games, also known as sweepstakes or instant lottery, involve players purchasing tickets that are entered into a draw for prizes. The drawings can be conducted at a local level, by state or territorial governments, or in some cases by independent organizations. Many lottery games are played using computer programs, and the software behind them is widely used. Lottery games are popular worldwide and are used to raise money for various purposes. In the United States, a large portion of lottery revenue is dedicated to public education systems.

In the late 19th century, private lotteries began to appear in the United States. These were often held by church groups and other civic organizations. They operated in conjunction with a national or state-licensed lottery, which was required to offer only the same prizes as those offered by state-sanctioned private lotteries. In the mid-1970s, new technology allowed players to buy lottery tickets using video terminals (slot machines in all but name). These devices accelerated the pace of lottery play and introduced a wider range of games.

The Internet has greatly expanded the range of available lottery games, with a multitude of sites offering online versions of traditional games. These sites usually charge premiums on the base price of a lottery ticket. While some of these websites are legitimate, others are not. In some countries, these online lottery sites have become a significant source of illegal gambling. The majority of lotteries in the world are controlled by government agencies. They may be a form of taxation, or may be used to raise funds for specific projects. They can also be used to promote public education, health, or cultural activities.

There are over 50 state-regulated lotteries in the United States, and a number of other lotteries in the world, including the national Powerball and Mega Millions games, the Italian SuperEnalotto, and the German Lotto 6aus49. Most US state lotteries are privately run, with some exceptions. In New Zealand, the Lotto is a Crown entity that operates four games: Lotto, Keno, Bullseye, and Instant Kiwi. Lottery profits are distributed by the Lottery Grants Board to a variety of charitable and community groups, including Sport and Recreation New Zealand, Creative New Zealand, and the New Zealand Film Commission.

Although gambling is illegal in Laos, some citizens still gamble in casinos in Special Economic Zones. Other citizens use lottery winnings to fund their families and businesses. The government encourages responsible gambling. It also promotes awareness of problem gambling through public service announcements and education programs. The government is considering a law to require casino owners to register with the lottery. However, it is not clear how this law would be enforced or what penalties the law would impose on operators who fail to register. In addition, the government does not regulate offshore gaming. It is hoped that the law will be enacted in 2016. In the meantime, a growing number of people have been utilizing the internet to gamble at offshore casinos.