The Best Free Online Slots Bonuses and Casino | 2018

Online Casino Slots Bonuses – Wide Array of Boosts and Rewards

Just because there are a lot of them, doesn't make it easy to find the best online casino slot bonuses out there. Hundreds of online casinos, 5 times as many bonus offers, and rather limited time to find and decide where to play next. Sounds excruciatingly difficult, right? Thanks to CasinoCountdown, you don't have to wander anymore.

We have the top 17 online casinos for slot players, but we also showcase some of the best online slots bonuses, such as free spins, welcome bonuses, bonus money and cashbacks! If you're already familiar with the bonus terminology, join any of the below listed casinos, and we're 100% positive you will have a pleasant gaming experience. Those of you who like to learn more about slots and bonuses in general, scroll down and take it one section at a time!

Top 17 Slots Online Casinos - United Kingdom

Bonus Code
Welcome1
+ Info
Bonus Code
1LUCKY7
+ Info
Bonus Code
CBCCEX
+ Info

Topics

Bonus Code
SIXSHOOTER
+ Info
Bonus Code
oceanbets10
+ Info
Bonus Code
15FREELC
+ Info
Bonus Code
FREE33CNTD
+ Info
Bonus Code
FREE33CNTD
+ Info
See all Slots No Deposit bonuses
Bonus Code
WELCOMEBONUS
+ Info
See all Slots Signup bonuses See all Slots Bonus Spins bonuses
Bonus Code
20EASYWIN100
+ Info
Bonus Code
BIGGERISBETTER
+ Info
See all Slots Match bonuses
Bonus Code
20FREECASH
+ Info
See all Slots Free Play bonuses
Bonus Code
TRAVELTHURS
+ Info
Bonus Code
RELOAD
+ Info
See all Slots Reload bonuses See all Slots Cashback Daily bonuses See all Slots Cashback Monthly bonuses See all Slots Cashback Weekly bonuses
Current Bonuses
Flag USA
Players from USA Accepted

Best Online Slots Bonuses - Tons of Bonuses for Tons of Slot Games

As we mentioned earlier, online casino slot bonuses come in many shapes and sizes. Over the past two decades, online casinos have been competing amongst each other, putting their innovation to the ultimate test, what casinos will persevere. Eventually, those that were simply generous, came on top.

Today, there’s a decent range of online slot bonuses, rewards and promotions that are not only eye-catching, but they’re lucrative as well. This page is a collection of the best online slot bonuses you will ever come across on the internet. As you can see, they vary greatly and below we’ll show you how they impact your gameplay and what are their pros and cons. After all, you can only have one bonus at a time and you can’t get another one until you don’t complete the associated wagering requirements.

Due to the astounding popularity slot games have gotten over the years, online casinos have provided slots players with adequate boosts, rewards, bonuses and tournaments. Online slots bonuses come in many shapes and sizes, and it’s highly likely you can take advantage of all of them! Unless a bonus specifically targets the needs of a given player group, that particular bonus can fully meet your requirements as a slot player.

The Most Popular and Widely Available Casino Games, Slots!

Due to their nature online slot bonuses go beyond the standard or regular range of bonuses. The flagship rewards are Free Spins. These don’t have any use to table game players, such as roulette or baccarat, or even card game players like blackjack or poker. However, we’re going to take a look at them in detail a bit later.

It all started almost a century ago with slot machines that are still available in land based casinos. Now known as classic slots, these have evolved into modern, advanced video slots. No wonder players love and enjoy them so much. Moreover, there’s a special kind of video slots called progressive jackpot slots, with top prizes that go beyond the £10,000,000 mark. Classic slots usually have 3 reels and a limited number of paylines, whereas video slots as you will find out yourself, extend to 6 or 7 reels and just as many rows of symbols. The number of paylines can easily go beyond 100, giving you higher chances to win.

Types of Online Slots Bonuses

Not only do they come in various forms, but they also come in high numbers. Slot players are the casino player group with the most options to choose from as far as bonuses go. Not only there are a lot of bonuses, but there are a lot of games as well. This can make it a bit difficult to decide what bonus to snatch and what slot game to play! Neverthless, from this point on, we’re going to discuss all types of bonuses that target slot players!

Free Spins, Mega Spins, Super Spins

Free Spins are pinnacle of online casino bonuses in general. Why? Because they have a clear cut target group and they bring a distinctive profit potential. Usually, when a casino offers Free Spins, the player is clearly informed what slot games qualify. Mega Spins and Super Spins are an advent form of Free Spins which come with a higher bet value per spin, which makes them 10 times more attractive. Nevertheless, these come with higher deposit thresholds and they might also be available to loyal or VIP players only. We’re not saying you can’t get them, just that you will need to go the distance.

You can between 5 and 500 Free Spins, depending on the offer and the casino’s generosity. By the way, Free Spins can come with wagering requirements, but there are Free Spins that are free from any wagering requirements. You want to get more of these.

The Best No Deposit Free Spins – Featuring Sign up Free Spins

We had to put Sign Up Free Spins as a different category, mainly because they’re only available to new players, and we can’t’ just bundle them together with the much desired, but general no deposit bonus free spins. As their name suggests, they do not require any deposit to get them, that’s why slot players simply love them, and we have can’t judge them.

In all honesty, considering their nature, they’re too popular, both from the casinos’ and the players’ standpoint. No deposit free spins offers can come anywhere from modest 5 no deposit free spins up to staggering 50! The terms associated with this online slot bonus category vary greatly. One thing’s for sure, wager free no deposit free spins are, in a way, like the mystical “unicorns”, players believe in them, yet only a few say they’ve seen them. We can confirm their existence, but they come with rather low maximum cashout limits.

Most of the no deposit free spins you can see here on this page, are sign up free spins, available upon sign up. All you need to do is register, use any bonus code if applicable and the free spins will be credited to your account.

Best Online Slot Free Play Bonuses

Then again, there’s an equivalent for table game players, which is usually referred to as Free Cash, Free Cash, or Free Bonus Money. These bonuses are available to existing players, and their main purpose is to incentivize players to come back and play some more, on the house! VIP players see a lot of this kind of bonuses, and quite frequently! These Free Play bonuses are becoming scarce from the perspective of regular players, which still haven’t advanced up any VIP ladder. Due to their specific nature, as you will see, Free Play bonuses are a rarity.

Bear in mind, Free Play slot bonuses usually come with hefty wagering requirements. You might get the impression that they’re quite the treat, which they are, but only if you’re into slots for fun mostly. Yes, you can end up a winner, but the wagering requirements prove to be quite limiting. Maximum cashout limits are a thing, which do not necessarily need to be tied to a specific fixed among, instead, the limits are related to the bonus amount granted. Slots, table games, or any other type of game that might’ve caught your attention, they’re all on the list. Just make sure you follow the specific bonus terms, which can be rather long when it comes to Free Play slot bonuses.

Online Casino Slots Welcome Bonuses

Although at first glance they might not seem like appealing to the slot player’s eye, they’re everything one needs. Why? Because each and every one of them will allow you to play the majority of slot games in casino game libraries. Furthermore, you can complete any wagering requirements playing slots in 99.9% of the cases. In addition, the best part about bonuses in general from your perspective as a slot player, you can clear any wagering requirements in the shortest, fastest way possible. Slot games almost always contribute 100% of the bet amount towards the completion of the infamous wagering requirements.

Most of the renowned and recently established online casinos offer welcome bonus packages, which consist of both bonus money and free spins. This is just another proof how popular slot games are, and how vast the slot player base is.

Reload Bonuses for Online Slot Players

The flaw of free spins is that they limit the slot player choice in terms of what game they can enjoy. Reload bonuses fix this by giving you bonus money, which you can later on use as you please, playing whatever slot game you like. Bear in mind, online casinos disclose what games are not available to bonus players. These games are out of your reach if you claim a bonus or you have uncompleted wagering requirements.

Nevertheless, reload bonuses are a staple for passionate slot players who want longer play time, who want to explore new content and eventually, win more.

Online Slots Cashback Bonuses

In our experience, players tend to underestimate their potential. Cashback bonuses are the only type of boost for players who are reluctant to claim any bonuses whatsoever. You do not need to anything to get these. Sure, you have to make a deposit in order to qualify for a cashback later on. They range between 5% and staggering 30%, no questions asked.

Some casinos get creative with this kind of bonuses. For example, they might be willing to pay you back only if you’ve played any of the qualifying games outlined in the bonus terms.

Online Slot Tournaments & Other Competitions

Slot tournaments are definitely gaining momentum. In most cases, you don’t have to do anything else besides playing the games that are part of the tournament rules. Spin the reels, enjoy the game, win, earn tournament or leaderboard points and win spectacular prizes. You won’t find any tournaments listed on this page, but you should check out our dedicated tournaments section.

Do you think we need more deals? Do you think that we’ve missed any of the best online casino slots bonuses? Do not worry, there will be more the next time you come around.

Newest Casinos