A slot is a thin opening or groove in something. You can put letters and postcards through a mail slot at the post office. In the gambling world, a slot refers to one of a series of vertically-arranged rotating columns with symbols that pay out different prizes when they line up on certain combinations called “paylines.”
When choosing a machine, knowing its volatility can help you determine whether it’s a good fit for your playing style and risk tolerance. High-volatility machines may go long stretches without paying out, but when they do, the payouts can be substantial. Low-volatility machines offer more frequent, smaller wins and will allow you to play longer sessions without blowing your bankroll.
Many online slot resources, player forums, and game developer websites list a machine’s volatility as well. If you can’t find this information, experienced casino staff should be able to guide you toward the right machine for your needs.
When you’re ready to leave a slot machine, but don’t want to lose your spot, simply activate the service button on the console. This will notify a slot attendant that you need a short break and will lock the machine for 10-15 minutes. You can unlock it later by inserting a service card or wait until the lockout expires. Activating the service button does not count against your slot machine’s minimum or maximum bet limits. You can use the service button as many times as you wish, but the length of the lockout is determined by the casino’s rules.