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Bonus Buy Slots: The Top 10 Slot Games to Buy Bonuses in the UK

Simon Rose Written By Simon Rose Published on 18.01.2022 Last Updated on 11.09.2024

Bonus buy slots have taken the online gaming world by storm in recent years. Our guide takes you through everything you need to know about this fantastic game feature, along with our top recommendations about where to play, our reasons for choosing them, and how to pick your own operator. Here are our top picks:

Casinos that Offer Bonus Buy Slots Titles – Our Top Picks
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Here at Online-Casinos.com, we only recommend fully licensed and regulated casinos. If you stick to our suggested operators, you can rest assured that you’ll be playing with reputable businesses in a safe, secure, and fair gaming environment.

This is one of the main factors in compiling our list of the top slots casinos and also the main pillar for choosing the best bonus buy slots casinos.

What Are Bonus Buy Slots?

Recommendations by Category
?? Best Bonus Buy Slots Title White Rabbit
?? Newest Buy Feature Slots Game Dead or Alive 2
??? Top-Rated Bonus Buy Slots Site Karamba
??? Recommended Bonus Buy Jackpot Slot Medusa Megaways
?? #1 Bonus Buy Slot Feature Extra Chilli

Slots where you can buy bonus allow you to bypass the standard mechanics of the game and unlock the bonus feature instantly.

The game that started it all for bonus buy slots is White Rabbit, released by Big Time Gaming in 2017. Since then, other developers have created their own variations of the mechanic, and implemented it in their releases.

Features range from traditional free spins games, to a host of other potential bonus rounds. Be sure to check the ins and outs of your chosen bonus buy slot’s features before playing, so you know what to expect.

Our Top 10 Slots Titles

Now that we’ve covered the basics of bonus buy slots, let’s dive into some of the best options out there for those looking for exciting and immersive gameplay features.

Below, we’ve listed some of the most popular online casino games, focusing, in this case, specifically on the bonus buy mechanic. Rest assured, any one of these slots would be a fantastic choice.

White Rabbit – An Alice-Inspired Adventure

White Rabbit Slot Overview
Slot Name White Rabbit
Software Big Time Gaming
RTP 97.72%
Best Casino Casino Gods

Inspired by the fantasy adventures of Alice in Wonderland, White Rabbit boasts a Megaways mechanic in the base game and a 97.24% RTP that rises to 97.72% with the bonus buy mechanic. Fans of the classic tale will be impressed both by the design of this slot, and the fun gameplay mechanic that come with it.

White Rabbit is a joy to play thanks to its stunning visuals and bold colours. A trip down the rabbit hole awaits all those who choose to spin the reels of this fun-looking slot. But it’s not all about the aesthetic, here.

The free spins feature can be triggered, or purchased via the Feature Drop with a cost that goes down if certain symbols land. While you can buy the free spins game at any point, every time one of the Drop symbols arrives anywhere on the reels, the cost of buying the feature will decrease.

During the free spins feature, reels start at between five and seven rows in height, and can grow during the feature up to a maximum of 12 rows. A nice little nod to the source material, and an exciting mechanic for the player.

The cost of the bonus buy starts at 100x your bet, which is still lower than some others, even before the Feature Drop.

Extra Chilli Megaways – Thousands of Ways to Win

Extra Chilli Slot Overview
Slot Name Extra Chilli
Software Big Time Gaming
RTP 96.15%
Best Casino Ladbrokes

Another Big Time Gaming slot with the Feature Drop mechanic, Extra Chilli is a colourful, Mexican-inspired slot with up to 117,649 ways to win on every spin thanks to the Megaways engine. There is also a cascading reels mechanic, seeing winning combinations disappear to have others fall in their place for the chance of consecutive wins.

Bright colours adorn all corners of the reels, with a Mexican town in the background and a suitable soundtrack providing the background. The attention to detail is impressive, and really helps bring the design of the slot to life.

You want to land the H, O, and T symbols to trigger the free spins feature, but collecting Feature Drop symbols makes the bonus buy option less expensive, too.

Four free spins are given when you trigger the feature, and a multiplier rises by 1x with every cascade win gained during the bonus round. That multiplier does not stop when a cascade does, instead it locks in place for the whole feature, growing further with any additional cascades.

The currently displayed multiplier will be added to all wins on the current spin or cascade. Additionally, landing bowls of chilli icons beneath the reels will trigger more spins, still not resetting the multiplier.

Rick and Morty Megaways – A Brilliant Cartoon Adaptation

Rick and Morty Slot Overview
Slot Name Rick and Morty Megaways
Software Blueprint Gaming
RTP 97.05%
Best Casino Videoslots

Blueprint Gaming’s Rick and Morty slot game is based on the cult classic cartoon of the same name. As you would expect, the slot incorporates a great deal of the imagery and even some animations from the source material. Not only visually impressive, this feature-rich slot has a max win of 50,000x your bet.

Rick and Morty is packed with bonuses including a very exciting free spins feature. There’s a choice of three different free spins feature when you trigger the bonus game, which you can choose from, or pick a random combination of spins (up to 50) and modifiers.

The slot has a 96.55% RTP in the base game, and this rises to 97.05% in the bonus game. If you don’t want to wait for the required number of scatter symbols to land, for a cost of 150x your bet you can take yourself straight to the free spins feature.

When buying the bonus, the mystery free spins feature is the only option, so you won’t be able to choose the number of spins or the modifier, upping the risk level a little. It’s worth weighing up the risk vs reward here before choosing whether to take this option.

If you want to buy the bonus, it will cost you 150x your stake, which is higher than some others, perhaps due to the high volatility of the bonus game.

Dead or Alive 2 – A Modern-Day Western Hit

Dead or Alive 2 Slot Overview
Slot Name Dead or Alive 2
Software NetEnt
RTP 96.82%
Best Casino Ladbrokes

It was only a matter of time until software giant NetEnt jumped on the bonus buy slots bandwagon, and it did so with the hotly anticipated sequel to a bonafide smash hit. Dead or Alive 2 is a 5-reel slot with a Western theme that? truly shines in its bonus rounds.

The design of the slot is fantastic, with various outlaws appearing on the reels, each created in a playful and entertaining cartoon style that adds to the fun vibe of the slot.

If you enjoyed the first Dead or Alive slot, this one is guaranteed to float your boat. It’s kept the feel of the original, but both the graphics and gameplay have been enhanced considerably. While the original slot has reached classic status, Dead or Alive 2 feels modern and exciting.

Landing three scatter symbols will trigger the game’s free spins feature, here you have a choice of three potential versions of the bonus, each offering its own modifier such as increasing multipliers, locking wilds, and even a suyper high volatility bonus game with a max win of 100,000x your bet.

For a pretty competitive cost of 66x your bet amount, you can bypass the scatter collection and buy your way right into the free spins feature. As with the regular way of triggering, you can choose your bonus game here, too, ensuring you can pick a free spions round that best suits your playing style.

Money Train 2 – Western-Style Heist

Money Slot 2 Slot Overview
Slot Name Money Train 2
Software Relax Gaming
RTP 96.40%
Best Casino Ladbrokes

Continuing the theme of Western inspired slot sequels, Money Train 2 sees the RTP jump from 96.4% to over 98%, when you opt to use the bonus buy mechanic.

In the base game, the respins feature keeps things interesting, guaranteeing a win when it triggers, and building a multiplier for every non-winning spin on the way to the eventual payout.

However, it’s the main feature, the Money Cart Bonus, that is the one to look out for when playing Money Train 2. This feature sees all symbols disappear from the reels, and the player is then given three respins.

Every time any symbol lands, the spin count returns to three, the round continues until all positions on the reels are filled, or the spin counter reaches zero.

All symbols landing on the reels are useful, they may offer cash prizes, or enhance the total already collected. When the Money Cart Bonus round finishes, all collected values will be combined for a total payout.

This feature is triggered from the base game, but if you’re in a rush to try it out, you can get yourself straight there by buying the bonus for 100x the bet value.

Sweet Bonanza – A Fruitylicious and Tumbling Fun

Sweet Bonanza Slot Overview
Slot Name Sweet Bonanza
Software Pragmatic Play
RTP 96.51%
Best Casino Grosvenor

If you have a sweet tooth, Sweet Bonanza is the bonus buy slot game for you. Packed with vivid colours and various fruits and lollipops, the slot has the popular cascading reels mechanic in the base game.

Bypassing regular paylines, Sweet Bonanza instead operates using a scatter pays mechanic, meaning that combinations of symbols anywhere on the reels will result in a payout, they don’t need to be on a payline or even adjacent to each other.

With the cascading reels mechanic, when combinations do land, they are removed and other symbols fall into their place for the chance at extra wins. The playful, colourful, sweetie theme is well balanced here with the exciting gameplay.

This excellent Pragmatic Play title has a bonus buy mechanic, too. For 100x your stake, you’ll trigger a feature with a max potential jackpot of 21.000x your bet value.

It’s a simple free spins bonus here, 10 spins and a payout for the triggering scatters. You can also gain an additional five spins if you land three or more scatters during the feature, so the spin count can rise here if the reels fall in your favour.

Sugar bombs can land during the bonus feature, offering multipliers of up to 100x attached to any wins you may happen to land on the reels.

Jammin’ Jars – Unique Grid & Unique Experience

Jammin' Jars Slot Overview
Slot Name Jammin’ Jars
Software Push Gaming
RTP 96.83%
Best Casino Grand Ivy

Jammin’ Jars from Push Gaming, is a slot with a unique 8×8 grid and no fixed paylines, instead paying out for clusters of symbols. If enough symbols land together, either next to, above, or below each other, they will trigger a payout.

This colourful slot sees the reels filled with fruit symbols and jam jars. This creates an interesting combination of the modern and the retro, further enhanced by the neon colour scheme in the background of the game screen.

Jammin’ Jars also has a cascading reels mechanic, meaning winning symbols are replaced by others for potential consecutive wins. Not only that, but if a cascade does not result in a win, it might trigger the Rainbow feature, where a giant symbol is added to the reels to raise the win potential.

Three of the titular Jammin’ Jars symbols landing on the reels will trigger the bonus feature. In addition, these also act as sticky wilds, remaining on the reels for all six spins. Not only that, but any additional wilds landing during the duration of the free spins game will also stick to the reels.

If you want to guarantee the three triggering symbols will land on the reels, the bonus buy option can be purchased for 84x your bet value.

Genie Jackpots – Progressive Treats Under the Arabian Sky

Genie Jackpots Slot Overview
Slot Name Genie Jackpots
Software Ash Gaming
RTP 92.09%
Best Casino The Grand Ivy

Genie Jackpots is Ash Gaming’s first foray into bonus buy slots. A 20 payline slot with a maximum 10,000x bet base game win and a progressive jackpot, this slot lives up to its name.

Design wise, there is a lot to love about this slot. Fun is very much at the centre of the aesthetic, the happy, purple genie has a hint of the Disney about it, while striking colours and images do a good job of helping to bring the slot to life.

The big bonus here, the Three Wishes Power Spin bonus, can be bought or earned and sees you rub lamps to trigger modifiers including locking wilds and unlimited multipliers. You trigger between 10 and 20 free spins here, depending on the number of triggering scatters.

Lamp symbols landing during the feature will add spins to the count, in the case of the unlimited multiplier, this will result in the multiplier continuing to raise by 1x on every spin for as long as the feature continues.

If you want to buy your way into the bonus feature, you can do so at a cost of 100x your bet, this will result in between three and six bonus symbols landing and triggering the relevant number of spins.

300 Shields Extreme – High Volatility Spartan Action

300 Shields Extreme Slot Overview
Slot Name 300 Shields Extreme
Software NextGen Gaming
RTP 95.66%
Best Casino Yeti Casino

300 Shields Extreme is a sequel that did a good job of improving on its already beloved predecessor. Essentially, this is a reskin of the original slot, with most the effort going into updating the graphics and animations to create a modernised version of the popular title.

However, there are two big changes that have been made to the super high variance slot. One is that the scatter symbols carries more impact, and the other is the addition of the bonus buy mechanic.

For a , which is a lower price than the majority of bonus buy slot games, you can get your way straight to the 300 Shields Extreme free spins feature. But what can you expect when you get there?

You get five free spins here, whether you buy the bonus or trigger it with three scatters. During the feature, any wilds landing as part of a win will add a 2x multiplier. Additionally, two scatter symbols will trigger another five spins.

Every time two scatters land, not only will more spins be given, but the multiplier attached to the wilds will increase up to a maximum of 300x, for the potential of wins of 17,700x bet during the free spins feature.

Medusa Megaways – Greek Mythology and Modern Mechanics

Medusa Megaways Slot Overview
Slot Name Medusa Megaways
Software NextGen Gaming
RTP 96.28%
Best Casino 888casino

Medusa Megaways is a NextGen offering with an Ancient Greece theme and a Megaways mechanic offering up to 117,649 ways to win on every base game spin.

With an RTP of 96.28% that rises to 97.63% in the bonus game and a max win of 50,000x stake, this slot knowns how to make an impression.

Medusa Megaways looks great, too, adorned with gold and stunning Grecian architecture in the background. The free spins feature, which triggers 10 spins for three or more scatters in view, can be bought for 100x your stake at any time.

The feature benefits from a multiplier that stays locked throughout the bonus game and rises with every win, as well as two additional modifiers that can add extra wilds and more to the reels.

Any additional scatters on top of the triggering three will add five to the spin count, while three more scatters landing during free spins will throw another 10 spins into the mix, so that multiplier can really build up if you’re lucky here.

Other Popular Slot Game Types With Bonus Purchase Features

The list of best slots to buy the bonus for is seemingly growing by the day. That’s because this is a relatively new mechanic and, as such, an increasing number of developers are looking to get in on the action.

Some of the best-rated casino software developers already offer bonus buy slots, with others expected to join the party in the near future.

Bonus buy slots don’t just fit in one category either, the following are just some of the types of game that may offer you the chance to purchase the bonus feature.

As you can see from the list above, there’s no shortage of options, ensuring there’s likely to be a bonus buy slot to suit your preferences, whatever they may be.

Big Time Gaming – The Software Provider That Introduced the Bonus Buy Feature

Big Time Gaming started the industry trend towards bonus buy slots. Over the years, this studio has developed a fantastic range of slot titles, many of which offer this feature. Check out our page on Big Time Gaming casinos to learn more about their games and where to play them.

BTG is known in the industry as a developer that favours quality over quantity, similar to many of the best Yggdrasil casinos. This makes sure that when the developer drops a new title, the online casino world takes notice. Here are some key facts about Big Time Gaming:

?? Software Name: Big Time Gaming Pty Ltd
?? Year of Establishment: 2011
?? Casino Products: Slot Games
#?? Number of Games: 40
?? Most Popular Games: Bonanza, Extra Chilli
?? Official Website: Big Time Gaming
?? Headquarters: Sydney, NSW, Australia
?? Address: 203/50 Holt St, Surry Hills NSW 2010, Australia
?? Phone Number: +61 2 8802 10766

Following BTG’s lead, many pioneering software producers were quick to sink their teeth into the revolutionary feature and embed it in their future releases, and we have highlighted several of them above.

Frequently Asked Questions

Below, you’ll find answers to the most commonly asked queries regarding the bes bonus buy slots and casino sites.

What are the best bonus buy slots casinos?

The best bonus buy slots casinos offer a wide range of options from BGT and other slot developers. However, you should keep in mind that for UK players, the bonus buy feature has been disabled due to a decision of the UK Gambling Commission in 2019.

What are bonus buy slots?

If you are wondering what bonus buy slots are, you could easily figure it out, as the answer hides in the name of the slot type. You get immediate access to a given bonus round without having to land specific combinations of symbols and scatters. Be prepared to pay the price should you want to bypass the formalities.

Which are some other popular slot types besides bonus buy slots?

The buy feature slots are not the only types of slot games that online players can enjoy. Several other reel machine types can be distinguished depending on your play style or what you seek as features. All of them come with their own examples of titles and casinos to play them at, too.

What are the top-rated bonus buy slot titles?

The top-rated bonus buy slots contain ten of the most liked and various reel machines from a slew of great software providers. They boast different levels of attention to detail, genres, and free spins rounds. The one thing they have in common, though, besides being great, is the inclusion of the feature buy option.

Which software came up with bonus buy slots first?

Nowadays many software providers produce slots where you can buy a bonus. However, it all started with the White Rabbit slot, developed by Big Time Gaming. It is the first company to release the trademarked Feature Drop function, which allows online gamblers to pay a certain amount to unlock the slot's bonus round.