Gambling age requirements vary by jurisdiction, typically ranging from 18 to 21 years old. These regulations are designed to protect minors from the potential harms of gambling. In many places, individuals must be at least 18 to participate in lotteries and play at casinos, while others reserve certain activities, like sports betting, for those 21 and older. It's essential for players to verify local laws, as non-compliance can lead to legal consequences and the invalidation of winnings. Understanding these age restrictions is crucial for responsible gambling practices.