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Biggest Casino Bonuses Featured

Biggest Casino Bonuses Online

Written by:
Published: 13/11/2024 Site updated: 05/03/2025 6 Min. read time
casino bonus

Casino bonuses are always popular among players, and it goes without saying that many of them are looking for the very best offers online. Kingbonus happens to be the ideal place to start. We list all the best offers online to make it easier for you to find the biggest bonus. But what does “biggest” really mean? Are we talking about the biggest bonus percentage or the biggest bonus amount?

More often than not, the higher the bonus percentage, the lower the value. However, this isn’t always the case. Also, it’s worth considering that while some players prefer a highest possible bonus percentage, others are looking to get a highest possible bonus amount. This means it’s important to evaluate each bonus offer individually.

To save you the effort, we at Kingbonus have gathered information about and evaluated the biggest and best casino bonuses online. By reading our reviews and analysis of the current offers on the market, you’ll easily find the best bonus for your needs.

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The biggest casino bonuses May 2025

Lucky Ones

Crypto New Casino Recommended

Percentage175%

Up to€3000

Freespins200

Wager40x

SlotMafia

Crypto New Casino Recommended

Percentage100%

Up to€2.000

Freespins200

Wager50x

Metaspins

Crypto Recommended

Percentage100%

Up to1 BTC

FreespinsN/A

Wager25x(d+b)

Rocket Riches

No Sticky Crypto Exclusive Bonus Recommended

Percentage100%

Up to€800

Freespins200

Wager35x

Big Boost

No Sticky Crypto Exclusive Bonus Recommended

Percentage100%

Up to€800

Freespins200

Wager35x

Spinni

Crypto Exclusive Bonus New Casino Recommended

Percentage200%

Up to€1,000

Freespins100

Wager30x (d+b)

Wild Robin

No Sticky Crypto Odds New Casino Recommended

Percentage100%

Up to€500

Freespins200

Wager35x (d+b)

Playfina

Crypto Odds Recommended

Percentage100%

Up to€500

Freespins200

Wager40x

PowerUp

No Sticky Crypto Recommended

Percentage120%

Up to€240

Freespins300

Wager35x (d+b)

Malina

No Sticky Crypto Odds Recommended

Percentage100%

Up to€500

Freespins200

Wager35x (d+b)

Trickz

Crypto Exclusive Bonus Recommended

Percentage150%

Up to€500

Freespins100

Wager15x (d+b)


Highest percentage

The most prevalent bonus offer online is without a doubt the 100% casino bonus. On our website you’ll also find some higher bonus percentages, even up to 500%. However, the vast majority of bonus offers are 100%, meaning the casino will double your deposit. To make it easier for you to find the best 100% casino bonus, we have compiled casino lists ranked according to bonus value.

Largest amount

A large bonus amount normally means the bonus percentage is lower, and vice versa. This means that at 500% bonus might be far less beneficial than a 100% casino bonus, even though this feels quite counterintuitive. The reason is simple: A 500% bonus often has a max cap of €50. If you deposit €10, you get €50. If you deposit €100, you still only get €50 in bonus money because of the max cap.

A 100% bonus on the other hand, can have a max cap as high as €1000. If you deposit €10, you only get €10 in bonus money. But if you deposit €100, you get €100, meaning you get twice as much as you would have with a 500% deposit bonus. So, depending on how you play, it might be beneficial to seek out a 100% match bonus instead of looking for the highest percentages.

Bonus bundles

Welcome bonuses are usually the best offers you can get. These are only available for new players, and often comprise of both high value and a high bonus percentage. Even better, most welcome bonuses are in effect welcome packages, meaning you get several welcome bonuses divided among the first few deposits.

These bonus offers often include both bonus money and free spins, and the bonus percentage is usually quite high. However, it’s important to note that there is quite a bit of misleading marketing. For example, a casino can claim they offer a 400% bonus up to €1000. In reality, the player gets four 100% bonuses up to €250, which is hardly the same thing.

Great bonus offers

Anyone who has ever been in search of a new casino to sign up with can tell you that there is a vast number of sites to choose from. In fact, there are so many different options that it’s difficult to know where to start. However, the vast number of casinos also means that the competition is fierce. All operators have to compete to attract new players.

And how do they do this? By offering bigger and better casino bonuses than the rest. This is the ideal situation for any casino player. Let the casinos compete for your business, and you end up with even better and bigger bonuses than you could dream of. Because when it comes down to it, online casinos are more or less the same. They offer the same games and the same payment methods, so you can might as well chose the one which offers the best bonuses.

A free bonus isn’t free

Several casinos offer “free” bonuses, but as you might expect, they’re not really free. Casino bonuses do give you extra money, often credited directly into your account shortly after your deposit. However, this doesn’t mean the money is completely free, nor is it in effect yours. All casino bonuses are subject to terms and conditions, and more often than not, you’re not even able to play with the “free” bonus until you’ve spent all your hard-earned money. Either way, you have to meet the given wagering requirements before you can get your hands on your winnings.

Wagering requirements

This begs the question; what wagering requirements can be considered “fair”? The average wagering requirement online is about 35 to 45x, and anything lower than this might be considered very good. However, when you see wagering requirements pushing 50x or even 60x, it might be wise to steer clear. Wagering requirements of 80x and above are virtually impossible to meet.

You should also pay attention to how the bonus terms are defined. If a bonus has a “d+b” wagering requirement, this means you have to wager both the deposit (d) and bonus (b) money. In effect, this means the wagering requirement has doubled. A 40x d+b offer equals a 80x regular bonus offer.

The whole picture

Before accepting a casino bonus, it’s important to look at the whole picture. If a bonus looks too good to be true, it usually is. In which case you should definitely keep looking for something better. Even if everything looks ok, there might be some unpleasant surprises lurking in the future. This is why it’s so important to read everything that’s written in fine print. It might be very tedious to read all the terms and conditions, but it might pay off in the end.

That’s not to say you need to do all the work yourself. The Kingbonus team always aim to list the best bonus offers. We analyse and test all offers and put the terms under close scrutiny to ensure they are worth your time. However, please note that all casino offers are subject to change, and you should therefore do your own research as well. Don’t just look blindly at the bonus percentage or the bonus amount. Always look at the whole picture.

Frequently Asked Questions

How do I convert bonus money into real money?
To turn bonus money into real money, you first have to meet the wagering requirements. Remember that there might be both a time limit and a max cap.
Where do I find the biggest bonuses?
If you’re looking for the biggest casino bonuses, you can have a look at Kingbonus’ listings. We always aim to list the best and biggest bonus offers online.
Are casino bonuses free?
A casino bonus is not free money. But you get free spins or free money, which in turn means that your chances of winning will increase.
How do I withdraw bonus money?
Before you can withdraw your bonus money, you need to meet the wagering requirements. When the bonus is cleared for withdrawal, you need to make sure your account is verified. Then it’s just a matter of choosing a suitable payment method and ask for a withdrawal.

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