Online slot games are among the most popular forms of gambling. They’re accessible to anyone of legal age and require no special skill set. They also provide a wide variety of themes and features to keep players engaged. It’s no wonder that they’re so popular! But have you ever wondered how these games actually work?

The answer is random number generators (RNGs), which are constantly selecting different combinations of numbers to correspond with a pre-determined arrangement of reels. When a player presses the spin button, the RNG selects a random number that correlates with a particular outcome on the reels. The result of the spin is then calculated and displayed. This process ensures that every player has a fair chance of winning a prize.

But even with this technology, there is a certain amount of luck involved in any casino game. This is why casinos have built a house edge into their rules, and this advantage is reflected in the payout percentages of each machine. In the long run, this will make sure that a casino makes a profit, but in a single session, any player could experience an unlucky streak and walk away with nothing.

The best online slot sites offer a wide variety of titles from multiple software studios, with a range of low, medium and high volatility games. They also offer a variety of progressive jackpots, instant wins and Megaways slots to appeal to all types of players.