Online slots are fun and easy to play – you simply deposit your money, spin the reels and see whether you’ve won. But how do they work? In this article we’ll look at the technology behind these games and find out how they can be so exciting.

Online slot games are powered by random number generators (RNGs), which determine which symbols will display on the reels at the end of each spin. These software components are tested and certified by independent expert agencies to ensure they are truly random and cannot be tampered with by online casinos or players. The RNG is also constantly audited to maintain its fairness. This is why reputable licensed online casinos have positive reputations and offer a safe gaming experience.

The most important thing to look for when choosing an online slot game is the return-to-player (RTP) rate and variance. You can usually find the RTP and variance for a particular slot machine on its help or rules page, as well as on the casino’s website.

Modern online slots often include bonus rounds that can multiply the payouts of a winning spin. These can include anything from wilds that act like jokers to free spins or multi-level games. These bonus rounds keep things interesting for the player, so boredom doesn’t set in.