Bonus Buy Slots UK – Casinos With Buy Feature Slots

Bonus Buy Slots are one of the most popular online platforms for UK players currently with the main attraction of allowing players to skip the base game and jump straight into the bonus rounds! The bonus feature is the most lucrative part of the game, hitting this feature naturally can take lots of time and money. Bonus buy slots gives you the option to skip this and have instant access to huge wins, sticky wilds, multipliers, re-spins and more! At Harvard Digital we pride ourselves on being the best at finding, testing and offering the latest and best Bonus Buy Slots and in our guide below we will cover everything you need to know including how they work, what casinos offer them and new releases.

We have selected the below casinos that offer the best and latest bonus buy slots:

Our Overview of Bonus Buy Slots

Bonus Buy slots can also be known as Buy Feature or Buy Free Spins but they are all the same thing, these options will be highlighted to the side of the playing grid and after you select them all of the details should be displayed. Casinos will sometimes showcase bonus buy slots in there own section of the website making life easy for fans, if you are in search of free spins, multipliers, re-spins and bonus rounds then bonus buy sots are for you. Huge wins and fast, fun gameplay will be unlocked with the bonus buy mechanic.

The Birth Of Bonus Buy Slots

Bonus buy slots started being recognised properly around 2017 across Europe with a large group of online casinos featuring them. Developers took the demand of players wanting instant access to bonus rounds and introduced bonus buy mechanics to new slots satisfying the need perfectly. This introduction blew fans minds allowing them to instantly access to higher paying and more rewarding features for a set price. This feature is perfect for players who like taking higher risks with bigger rewards and gained a lot of popularity with streamers who were showcasing the instant rounds and huge payouts for everyone to see.

Developers Using Bonus Buy Mechanics

Buy free spins has been around for a while now with pretty much most developers using the mechanic but it all started off with a select few creating and testing the mechanic. The following developers were the first to start pushing the feature buy mechanic to their fans allowing them to directly access the bonus rounds.

Big Time Gaming (BTG)

Big Time Gaming is widely recognised for creating the Megaways mechanic, a introduction that revolutionised slot volatility and win potential before the boom of Bonus Buys. Although BTG wasn’t the first to launch the bonus buy mechanic their focus on high-volatility gameplay and dynamic reel structures paved the way for many others to explore more interactive features. One of the earliest and most recognisable Megaways games was Extra Chilli that introduced a direct Bonus Buy option, allowing players to purchase free spins instantly. Another early release was White Rabbit Megaways, this featured an innovative “extend free spins” purchase system, combining Bonus Buy mechanics with progressive bonus upgrades.

NoLimit City

NoLimit City rocketed the Bonus Buy mechanic to another world when they combined edgy themes with extreme volatility and multiple purchase options. The introduction of tiered Bonus Buy options was revolutionary allowing players to pick different price options to suit their own needs. The Super Bonus Buys offers enhanced or guaranteed high-potential features allowing players to choose their own risk-to-reward balance. San Quentin xWays is a famous release for its multiple Bonus Buy tiers, including a premium “super bonus” capable of unlocking the game’s maximum 150,000x win potential.

Push Gaming

Push Gaming were among the first studios to make Bonus Buy features accessible across the UK and European markets. Their focus was clear, give players the option to skip lengthy base game sessions and jump straight into feature rounds. Releases such as Jammin’ Jars 2 introduced a Bonus Buy feature, expanding on the success of the original, Razor Shark is another early popular Bonus Buy release offering direct access to its high-volatility free spins round.

Pragmatic Play

Pragmatic Play brought Bonus Buy features to the wider market, integrating them into the majority of new releases. Their Bonus Buys are typically priced between 50x and 200x the stake, making them accessible to both casual players and high rollers. Sweet Bonanza is one of the most iconic Bonus Buy slots in the UK and worldwide markets. Gates of Olympus is also worth mentioning as it features a straightforward 100x stake Bonus Buy that became a player favourite.

Our Top 3 Bonus Buy Casinos

Wildzy Casino – Best New Casino Offering Bonus Buy Slots

Bonus Buy Casino: Wildzy Casino
Bonus Buy Titles: 2,500+
Total Games Library: 11,000+ Titles
Best Bonus Buy Game: Le Bandit by Hacksaw Gaming
Sports Betting: Yes ✅
Our Overall Rating: 9/10 ✅

Wildzy Casino is one of the best all round casinos offering bonus buy slots to be released in 2026. Accepting UK players it boasts a games library of over 11,000 titles including over 2,500 games that have the option to purchase the bonus! Alongside its casino game offerings it hosts a large catalog of live casino games including all the fan favourites like Roulette, Blackjack and Baccarat. Players also have the option to enjoy a full sportsbook where you can bet on markets worldwide. Welcome bonuses, reloads, cashback and free spins are all there to be enjoyed backed by a safe, reliable banking platform that also accepts credit cards.

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SpinShark Casino – Best Bonus Buy Casino For Bonuses

Bonus Buy Casino: SpinShark Casino
Bonus Buy Titles: 3,000+
Total Games Library: 10,000+ Titles
Best Bonus Buy Game: Better Bass Cash by Jacks
Sports Betting: N/A
Our Overall Rating: 8.5/10 ✅

Bonus buy slots, rewarding welcome bonuses, exclusive VIP clubs and a huge games library is what you can expect to receive at SpinShark Casino! SpinShark have plenty to choose from when it comes to slots, you’ll also find crash games, book games, scratch cards, fishing games, Megaways, jackpots and more. This non UK casino that accepts UK players allows deposits via credit cards, Cryptocurrencies, Visa, Mastercard and more.

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TTM Casino – Biggest Bonus Buy Catalog

Bonus Buy Casino: TTM Casino
Bonus Buy Titles: 8,000+
Total Games Library: 15,000+ Titles
Best Bonus Buy Game: Big Bass Bonanza by Pragmatic Play
Sports Betting: N/A
Our Overall Rating: 10/10 ✅

TTM Casino kicks 2026 off and is a launch that has made an immediate impression with a generous welcome package featuring 125 free spins to kickstart your experience. As a bonus buy slots rich casino, TTM supports flexible deposits while giving players access to thousands of slot titles from both leading industry developers and emerging niche studios, ensuring a broad mix of themes and volatility levels. The platform has one of the biggest games libraries we have came across making sure they cator to every type of players needs.

Early Years of Bonus Buy Slots

From the 2017 era of slot titles bonus buy features slowly got introduced into the market, they made a huge splash in the scene due to the main reason of the high win potential. Here are some of the more notable releases from the early days:

• White Rabbit Megaways by Big Time Gaming – 2017
  • The feature drop mechanic was one of the very first introductions to slots that allowed players to buy the bonus. This Feature Drop allowed players to reduce the cost of buying the bonus round by collecting coins in the base game.
• Extra Chilli Megaways by Big Time Gaming – 2018
  • one of the first Bonus Buy Slots where players could pay skip the base game and buy free spins with the option to then gamble for even more spins.
• Jammin’ Jars by Push Gaming – 2018
  • Allowed Push Gaming to further release Jammin’ Jars 2 where Bonus Buy was introduced in a more direct mannor.
• Tombstone by NoLimit City – 2019
  • An early NoLimit City release including Bonus Buy options, setting the way for their later releases where they added further features and options.
• Deadwood by NoLimit City – 2020
  • This release featured multiple Bonus Buys options including Hunter, Gunslinger and Shoot Out. This introduced one of the first multi-tier Bonus Buy systems where players had the choice between different levels of price.

How Much Do Bonus Buy Slots Cost in the UK?

Bonus Buy Slots give players the option to pay upfront for instant access to a game’s main feature, the free spins or premium bonus rounds. Instead of waiting for scatter symbols to land naturally, you can trigger the action immediately for a set fee. The cost of this depends on the slot’s volatility, feature depth and maximum win potential. In most cases this will range between 50x and 200x your base stake, some titles offer multiple tiers starting lower rising much higher depending on risk level.

Below is a breakdown of the most common costings and what you can expect.

	Cost	Description	Features Unlocked
Lower-Tier Bonus Buys	20x – 75x	Most affordable Bonus Buy suiting players looking for quicker feature access without committing to extreme volatility	• More frequent smaller wins • Simpler free spin structures • Lower overall max win • Reduced risk in comparison
Standard Bonus Buys	100x (Average)	Most common Bonus Buy option and is considered the perfect balance by players	• Better multiplier mechanics • Higher win chances • Great risk to reward • Good win potential without extreme exposure
High-Tier Bonus Buys	150x – 500x	Ultra high volatility and are aimed at experienced players comfortable with larger swings	• Increased multipliers • Guaranteed bonus upgrades • Extra reels & added features • Max win potential access • Significantly higher variance

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Our Top 3 Bonus Buy Slots

1️⃣ Beast Mode

Developer: Relax Gaming
 Volatility: Extremely High (10/10)
 Max Win: 25,000x
 RTP: 96.32%
Bonus Buy RTP: 98.35%

Beast Mode is one of the latest Bonus Buy Slot titles that features high volatility, over 4,000 ways to win and multiplers expanding up to 500x. Relax Gaming have delivered a retro theme, funky audio and with animal characters. The game runs on a cascading wins mechanic and offers a 96.32% RTP (up to 97% when buying bonuses) alongside randomly triggered Mystery Spins and three distinct free spins modes: Mystery Symbols, Multiplier Ladder (with multipliers up to x500), and Expanding Wilds, each with upgrade potential via a gamble feature.

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2️⃣ Chaos Crew 3

Developer: Hacksaw Gaming
 Volatility: High (10/10)
 Max Win: 30,000x
 RTP: 96.18%
Bonus Buy RTP: 99.43%

Chaos Crew 3 is Hacksaw Gaming’s most recognised bonus buy releases, continuing the series style offering 19 paylines and up to 96.18% RTP standard gameplay and 99.43% in the bonus rounds. The games main features are the Reel Multipliers using Crazy Multipliers, Cranky Cat wilds and the new Glitch Dog symbol which jumps around the grid adding values. Players can trigger Epic Drops and three escalating bonus rounds, with feature buys available up to 200x stake. With maximum win potential of 30,000x the bet, Chaos Crew 3 delivers fast-paced, multiplier-heavy gameplay true to the franchise’s chaotic roots.

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3️⃣ Miami Mayhem

Developer: Hacksaw Gaming
 Volatility: High (9/10)
 Max Win: 15,000x
 RTP: 96.35%
Bonus Buy RTP: 98.89%

Miami Mayhem is a medium to high volatility slot from Hacksaw Gaming with up to 98.89% RTP (bonus round), the game centres around expanding full-reel Crew wilds that can carry multipliers up to x100, alongside a mission system that increases multiplier potential through rising Wanted Levels. Three bonus rounds The Hit, We Split and the hidden Get Lit feature enhance the action, with maximum win potential capped at 15,000x the bet.

Tips on how to Pick The Right Bonus Buy Slot For UK Players

Buying a bonus feature can be exciting but choosing the right slot makes a big difference to both risk and potential reward. Here’s what to consider before jumping in.

Start With Your Budget & Risk Limits

Before playing decide how much you’re comfortable spending and what level of volatility suits you. If you have a smaller budget then look for lower costing Bonus Buy options around 20x–75x your stake. But if you are chasing bigger potential wins then the higher volatility slots with 150x+ bonus entries offer greater rewards but come with increased risks.

Compare Bonus Buy Pricing Tiers

Most Bonus Buy slots are priced between 50x and 200x your stake though many games now offer multiple buy options at different volatility levels. When comparing options check for flexible tier systems, if higher costings unlock enhanced features and consider if the price reflects realistic win potential or if payouts are capped.

Check RTP & Maximum Win Potential

Return to Player (RTP) and max win caps significantly affect long-term value aim for slots with 96%+ RTP and review the maximum payout, some games offer 20,000x to 50,000x+ your stake.

Understand the Feature Mechanics

Never buy a bonus without knowing what it includes always check for multipliers, sticky wilds, expanding reels or respin. Does the game have a high volatility and does the feature genuinely enhance win potential. Trying the demo version or watching gameplay reviews can help you avoid costly surprises.

Play at a Trusted Casino

Finally, make sure you’re playing at a reputable platform that supports Bonus Buy slots, holds a recognised licence, offers responsible gambling tools and provides bonuses or cashback to extend your playtime.

All of the casino we promote follow the trusted casino process explained above.

Final Advice:

Test a few Bonus Buy slots in demo mode before buying in with real money. It’s the best way to understand volatility and features without risk.