The best bonus buy online casinos

Bonus games on slot machines are particularly popular. With the Bonus Buy Feature you can buy free spins in some slot machines and thus increase your chances of winning immensely. We would like to show you below the online casinos where you can find slots with the internal free play function Bonus Buy. We'll also let you know which are the best BonusBuy slot machines.

You can find Bonus Buy Slots in the following online casinos

5.0 rating
Recommendation of the test team:
Up to € 500 bonus + 200 free spins
Fast spins, high stakes
Play with no bet limits
5.0 rating
Test winner slots:
Slot Hunter Casino 200 free spins + up to € 300
Bonus code: OPEN50
Without limits and regulations
3.5 rating
Slots & much more:
Magical Spin Casino € 3000 bonus + up to 100FS
2 million euros drops & wins
No restrictions
4.8 rating
No limits for players from Germany:
Winny Casino 100% bonus credit up to € 250
Play for free without registration
More than 3000 video slots
5.0 rating
Test winner trust:
Platinum Casino € 250 bonus + 120 free spins
Bonus code: Welcome
No limits & regulations
5.0 rating
New casino 2021:
CosmicSlot Casino € 1000 bonus + 200 free spins
Weekly cashback of 10% up to € 300
Play all games without limit
4.8 rating
Top bonus offer:
Four Crowns Casino 400% UP TO € 2000
Up to € 6000 bonus possible
No restrictions & limits
4.8 rating
Test winner bonus offer:
€ 1000 Free + 100 Free Spins
VIP bonus: 30% up to € 2000
Register now and play without limits!
4.8 rating
Brand New !:
LuckyDays Casino € 1000 bonus + 100 free spins
25% bonus up to € 700 on the 3rd deposit
Without limits & regulations
4.8 rating
Top BitCoin Casino:
Wild tornado
Up to € 1000 bonus + 100 free spins
No limits, no restrictions
Casino with EU license
4.5 rating
Newest Casino:
Oh my spins 100% up to € 500 bonus + 200 FS
Prize drops, cashback & reload bonuses
No limits & regulations
4.5 rating
New casino:
Mr Luck Casino 500% bonus + 100 free spins
1200% bonus on the first 3 deposits
Without limit & restrictions
4.5 rating
Innovative online casino:
Casombie Casino € 500 bonus + 100 free spins
10 bonus offers to choose from
No limits & restrictions
5.0 rating
Test winner newcomer:
National Casino € 300 bonus + 150 free spins
Reload Bonus Code: INLOVE
Without rules and limits
4.5 rating
Top recommendation:
Zet Casino
100% up to € 500 + 200 free spins
A total of 7 bonuses available
No limitation & restriction

The online casinos listed above not only have various bonus buy slots in their portfolio, but they also score points in many other test categories. We played and made a test report for every single online casino. Of course, we only list reputable providers who have a valid gaming license.

Advantages of the Bonus Buy function

bonus buy function

Anyone who likes to play video slot machines mainly aims to get as many free spins as possible. Because it is they who drastically increase the chances of winning at slots. Free spins are earned in most slot machines through the scatter. If the scatter symbol appears on your reels at least three times or even more often, you trigger free spins with which you can continue playing for free. You do not take any risks, because you do not lose any additional credit through the free spins. And the biggest advantage of the free spins cannot be dismissed out of hand: In most cases, free spins are associated with very high chances of winning.

Sometimes, unfortunately, luck lets you down and the scatters don't want to appear on the reels. The balance is minimized, but you are simply not successful and do not win any free spins. The Bonus Buy function, which is now integrated into many slots, can help here. With us you can learn more about the Bonus Buy Slots, about the feature itself and the advantages and disadvantages of the Buy Free Spins function.

Buy Bonus – The Bonus Buy feature and its function

As the term Bonus Buy already suggests, you can buy a bonus with this function. That means you buy yourself free spins. If you click on the Feature Buy or Bonus Buy symbol, you will automatically switch to the slot machine's free play mode. If you have activated the function, the required scatter symbols will theoretically appear on your reels in the next round, which will give you free spins. You then always play these free rounds with the stake that you placed in the main game.

So if you want to try to get slightly higher profit amounts with the feature buy function, you should increase your round stake before buying. However, it can also be the case that the video slot does not achieve the desired or hoped-for success even with the bonus purchase. Slot machines are and will remain a game of chance, which is also the case when playing paid bonus rounds.

Bonus Buy Slots are the slot machines where you can pay a bonus to get instant access to the main feature of the slot. Usually these are the free spins. With the feature purchase you get directly to the bonus feature and can play the separately paid games there. In general, you win in the bonus round within the slots 50-100 times the stake. The game is always played with the last bet made in the main game round.

However, you have to note that most online casinos do not allow feature purchases as long as you have an active bonus portion in your account. In this case, if you use money to buy a bonus feature, your bonus and the associated profit can be confiscated. So never use Bonusbuy if you have still activated any bonus!

What does the Bonus Buy function cost?

win bonus buy feature

The name of the function actually says it all – you have to use money to trigger the bonus feature. That means, you first have to invest credit in order to gain credit. Most of the time, the winnings are higher than the amount you wagered for the bonus purchase. With some slot machines an amount of 50 times your current stake is due, others ask you for 100 times or more. The higher the amount wagered, the higher the possible winnings.

Since additional functions are often activated with the purchased bonus feature, such as Multiplyer, Expanding Wild, Wandering Wild or Stacking Wild, the winnings are often well above the purchase price that you have to shell out for the free spins function. Furthermore, it is possible with many slot machines with a bonus buy function to achieve further free spins within the bonus rounds. Of course, these are then free spins and are not billed separately. If you are lucky enough to get additional free spins during the bonus games, the cash register can ring quite a bit.

The best bonus buy slots

bonus buy feature

The Bonus Buy feature is particularly popular because it brings immediate action to the game and it can generate huge profits. According to our research, it was probably the software provider and developer Big Time Gaming who invented the first slots with a bonus buy feature. At the same time, the Megaways slot machines were developed in this developer studio. An innovative idea that many other software companies have now integrated into their slot machines. There are now some top casino games with the option to purchase the bonus feature, which brings high profit potential with it. The BonusBuy online casinos listed above all have exciting FeatureBuy slots in their program.

Here we have 10 top bonus buy slots for you that you should definitely try:

TopSlot machinedeveloperavailable atPlay
1.White Rabbit MegawaysBig time gamingCasinoRextry now
2.#buyBonus of MayaBelatraNational Casinotry now
3.Mega mineRelax gamingSlothunter Casinotry now
4.3 thundersEndorphinaSlothunter Casinotry now
5.Return to the featureHabaneroCosmicslot Casinotry now
6.Dead or Alive IINetentPlatinum Casinotry now
7.Sweet bonanzaPragmatic PlayZet Casinotry now
8.Fortuna de les Muertos SpinomenalCasinolytry now
9.Cash QuestHacksawWild Tornado Casinotry now
10.Golden Fish Tank 2YggdrasilBob Casinotry now
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