How Online Slots Work

Online slots work in the same way they always have: you make your wager, spin the reels and wait for them to stop. If a line of matching symbols appears, you win. The game’s paytable will show you what each symbol is worth.

As long as the slot you play is a certified RNG, it will be fair. But the game’s results can still vary from session to session.

Random number generator

When you play a real money slot online, it uses a random number generator to determine the results of your spins. The RNG generates thousands of numbers every second, and a mathematical module in the software translates those numbers into reel positions. The RNG is not rigged and is audited regularly by reputable casinos to ensure fairness.

The RNG is a microprocessor that generates number combinations at random. It is the most common method for determining the outcome of a digital game. However, it is not as accurate as a true random number generator, which takes entropy into account. Pseudo-random number generators, on the other hand, are much more cost-efficient. This is why they are used in most online games.

Bonus rounds

Online slot games can offer a variety of bonus rounds. These mini-games vary from game to game and can range from simple pick-me-style bonus rounds to complex multilevel videogame-like experiences. They can also include extra Wild symbols or win multipliers.

In order to trigger a bonus round, players need to land a specific number of triggering symbols in a single spin in the base game. This can be anything from three to ten scatters or bonus symbols, depending on the game.

The best way to find out how much a bonus round pays is to study the paytable of the slot you’re playing. The paytable should tell you the payout potential of each symbol, how to trigger a bonus round, and what it can do for your winnings.


Multipliers are bonus features that can be triggered in many online slot games. These features multiply the payout of winning combinations, which can make a big difference in your overall bankroll. These bonuses are a great way to increase your chances of hitting big payouts, but be sure to check the terms and conditions before you start playing.

Multipliers are a common feature found in advanced video slots. They’re typically attached to regular wins, and some come into play during Free Spins or Bonus rounds. For example, a slot that offers a 3x multiplier for wild symbols will double the value of any winning payline they form. Multipliers can also boost lower-winning combinations and can be stacked on top of each other for even bigger payouts.


Online slots are a lot of fun to play and offer players an exciting experience. However, there is a lot of math involved in the game that determines whether or not a casino will make a profit over time. This includes everything from the number of paylines and reels to the random number generator that generates each spin’s outcome.

If you are looking for a simple experience, consider 3-reel slots that offer basic gameplay and low volatility. These games are more likely to hit smaller wins and will let you play for longer periods of time with a smaller bankroll. However, you should always be aware of your bankroll and stop playing when it is too high. This will help you avoid wasting money.


Many online slot games offer a variety of different symbols that vary by game. These can include standard, scatter and bonus symbols. These symbols determine a slot machine’s payout table and can trigger bonus games, free spins and respins. They can also offer progressive jackpots to lucky players.

Most of these slot symbols are designed to match a game’s theme. For example, an underwater-themed slot may feature fish symbols as its standard icons. Others have traditional symbols like diamonds, bells and bars. These were first used in physical slot machines in the early 1900s and have since become iconic casino symbols.

Other slot symbols include multipliers, which multiply your winnings by a predetermined amount. These are especially useful if you hit multiple winning combinations on a payline.