What Is A Bonus Round?

Bonus rounds are also known as bonus games. A bonus round is an extra spin, a mini-game that you’ll have to play or a separate section of the game that doesn’t require any extra bets but still allows you to make huge wins. 

You can activate a bonus round either by pure chance or by meeting some certain requirements. Usually, you’ll have to land some special symbols or collect a certain number of them. It can show up in both the base game and the free spins mode. 

Bonus rounds are so loved by gamblers that they’ve become usual occurrences in games from big and small developers alike. However, you should keep in mind that this bonus will show up exclusively in video slots, as the classic slots don’t have the graphics and power to support it.


How to Trigger Bonus Rounds

As a rule of thumb, there are two ways in which you can trigger a bonus round:

  • At Random. This is pretty self-explanatory. Some slots will offer bonus rounds at completely random times, without you having to achieve certain checkpoints or bet a set amount. 

  • By Scatters. While Scatter symbols will usually trigger the free spins, they can also be collected to start a bonus round. You will need three or more to begin the bonus round and they can even be collected during the free spins as well.


Types of Bonus Rounds

The best thing about bonus rounds is that there are really no rules when it comes to them. There are so many types of this bonus that it would take us a whole day to enumerate them all! That being said, let’s see what the most popular bonus round formats are:

  • Mini-Games. We’ve already briefly mentioned this type of bonus round but now it’s time to expand on it. Mini-games are, as the name suggests, small activities that expand upon the game’s main theme. A good example of a bonus round mini-game is the one in NetEnt’s Jumanji, where you’ll activate a small board game event where you’ll have to roll the dice and watch your chosen totem advance on the board.

Bonus Rounds Jumanji Slot

  • Pick A Box. This is the second most popular type of bonus round as it’s easy and gives the player some authority. Basically, you’ll be presented with a set of boxes that you’ll have to pick from. The prizes usually vary between instant cash, multipliers or even free spins! A good example of a pick a box bonus round can be found in Yggdrasil Gaming’s Champions of Rome slot. 

Bonus Rounds Champions of Rome

  • Spinning Wheel. This type of bonus round is pretty self-explanatory. You’ll be presented with a wheel of fortune that you’ll have to spin to win some prizes. MicroGaming’s Mega Moolah comes with this feature, as illustrated in the picture below.

Bonus Rounds Mega Moolah

  • Multi-Level. Some bonus rounds will allow you to play these games at various different levels. A good example would be Yggdrasil Gaming’s Vikings Go to Hell, where the success of your free spins determine the level you’ll get to play. 

Bonus Rounds Vikings Go to Hell

  • Cascades. Cascades are another popular type of bonus rounds. When you trigger these, the winning symbols will explode, making room for new ones to fall into place. You can play the Birdz slot by Games Warehouse if you want to experience this feature by yourself. 

Bonus Rounds Birdz

Bonus Rounds Slot FAQ

Are slot bonus picks predetermined?
No, both the bonus round itself and the outcome (the payout) aren’t predetermined. That’s because slots operate on RNG (Random Number Generator) technology that makes sure everything is fair and truly random.
Can I play bonus round slots for free?
Sure you can! All the slots with bonus rounds on this page are completely free to play, for as long as you want. But if you happen to find an awesome slot that you just can’t get enough of, we’re sure you’ll appreciate an enhanced experience in our Real Money Slots section.
What is the best slot with bonus rounds?
That’s quite subjective. But you can filter the slot list on this page by Top Rated to see which slots are the most appreciated by players. You can even leave a rating of your own after you’ve played!
How frequently do bonus games appear?
Slot machine bonus rounds usually depend on the game’s volatility. High volatility games will have plenty of incredible bonus rounds but they’ll be harder to trigger. Low volatility slots, on the other hand, might come with decent bonus rounds but the payouts won’t be astounding.