Beginner’s luck is the early success of someone new to a game, explained by chance rather than skill. The phrase is used far beyond casinos, but it is common at the tables, where poker players also call it the honeymoon period or the winning phase.
The saying usually carries a warning: the lucky run will end, and inexperience will show once it does. Mathematically, there is nothing special about a first session. Results in games of chance are independent, so an early win makes later wins neither more nor less likely; believing otherwise is a form of the gambler’s fallacy.
Use the term with care. Calling someone a beginner can sound dismissive, much like calling them a fish. For operators, early wins are a reminder that onboarding should explain game rules and point to responsible gambling tools from the very first session.