Best Bonus Buy Slots – Online Casinos With Bonus Buy Slots UK

Ever wished you could skip the standard spins and jump straight into a slot’s main bonus feature? That’s exactly what Bonus Buy slots allow you to do. Instead of waiting for Free Spins or another special feature to trigger naturally, players can pay a predetermined amount for instant access to the bonus round.

This direct approach has made Bonus Buy slots increasingly popular with UK players who enjoy faster gameplay, high-volatility mechanics and immediate access to a slot’s biggest features. We’ve compared the leading online casinos offering Bonus Buy games and selected our top sites that currently welcome UK players:

Our Expert Guide to Bonus Buy Slots

Bonus Buy slots, also known as Feature Buy or Buy Free Spins games, give players a quicker route into a slot’s main bonus features. Rather than repeatedly spinning the base game and waiting for the required scatters or symbols to appear, players can pay a predetermined price to activate a feature immediately.

Depending on the game, purchasing the bonus might unlock Free Spins, respins, enhanced multipliers, special symbols or a completely separate bonus round. The cost is normally calculated as a multiple of the current stake, so a feature priced at 100x would cost £20 when playing at £0.20 per spin.

Much of the attraction comes from what happens inside these features. Bonus rounds can introduce mechanics that aren’t available during ordinary spins, including expanding Wilds, persistent multipliers, cascading wins, additional symbols and enhanced reel configurations.

Bonus Buys are also closely associated with high-volatility slots. Paying for a feature doesn’t guarantee a return or increase the certainty of winning; a purchased bonus can return considerably less than its cost. This makes understanding the feature price, volatility and RTP particularly important before deciding whether to use one.

How Bonus Buy Slots Became Popular

Feature purchases started becoming much more prominent during the late 2010s as developers experimented with ways of giving players direct access to the most feature-heavy sections of their games.

Traditionally, players had to land a specific number of Scatter symbols or meet another triggering condition before reaching Free Spins. Bonus Buy mechanics changed that format by placing a price on immediate entry to the feature.

The idea quickly developed beyond simply purchasing a standard Free Spins round. Developers began introducing multiple purchase options, enhanced bonuses, guaranteed special symbols and increasingly sophisticated mechanics involving multipliers, Wilds, respins and persistent modifiers.

Bonus Buy slots also became particularly visible through casino streaming and online slot content. Being able to purchase consecutive features allowed streamers to showcase bonus rounds without long periods of base-game spinning between them.

Today, the mechanic has developed considerably. Some slots provide a single straightforward Feature Buy, while others offer several different purchase levels ranging from relatively inexpensive entry features to extremely volatile premium or “Super” bonuses costing hundreds of times the base stake.

Slot Developers That Helped Shape Bonus Buy Games

Bonus Buy slots aren’t all designed in the same way. Different software studios have developed their own approach to Feature Buys, which means the experience can vary significantly depending on the provider.

Some developers favour straightforward Free Spins purchases, while others concentrate on multiple buy levels, extreme volatility or more complicated feature systems.

Relax Gaming

Relax Gaming has become closely associated with feature-heavy slots that combine Bonus Buys with high volatility, multipliers and unusual bonus mechanics.

Rather than following one formula across every release, Relax games can provide different ways of accessing their main features, with some titles offering several purchase options.

Popular examples include:

Money Train 2

• Persistent special modifier symbols
• Feature-driven bonus gameplay
• Chained modifiers capable of interacting with one another
• High-volatility mechanics throughout the main bonus

Temple Tumble Megaways

• Cascading wins
• Megaways reel mechanics
• Progressive multiplier features
• Free Spins centred around enhanced gameplay

Relax Gaming is particularly suited to players who enjoy Bonus Buy slots where the purchased feature contains substantially different mechanics from the standard base game.

Hacksaw Gaming

Hacksaw Gaming has taken Feature Buys in a much more aggressive direction. The developer is known for highly volatile slots, compact mobile-first designs and several different ways to purchase or enhance a bonus.

Many Hacksaw games go beyond a single Buy Bonus button. Players can encounter standard Feature Buys alongside more expensive options designed to improve the starting conditions or provide access to a premium version of the feature.

Popular examples include:

Wanted Dead or a Wild

• Several distinctive bonus features
• Duel-style Wild mechanics
• Large multiplier potential
• Multiple ways of accessing the game’s features

Chaos Crew

• Cluster-based gameplay
• Multiplier-focused bonus mechanics
• High-volatility feature rounds
• Fast-paced bonus gameplay

Hacksaw has become particularly popular with players who want several Feature Buy choices rather than one standard Free Spins purchase.

ELK Studios

ELK Studios developed its own interpretation of paid feature access through the X-iter system. Instead of relying exclusively on a conventional Bonus Buy, X-iter modes can provide several predefined gameplay options with different prices, mechanics and volatility profiles.

This gives ELK releases a noticeably different structure from the straightforward “pay X times your stake for Free Spins” format used by many developers.

Features commonly associated with ELK games include:

• Multiple X-iter modes
• Different feature prices
• Alternative volatility levels
• Special starting conditions
• Feature-focused gameplay

Titles from series such as Nitropolis and Pirots demonstrate ELK’s preference for layered mechanics, progression and unusual bonus structures.

The result is a Feature Buy experience that can provide several different ways to approach the same slot rather than simply offering one premium bonus round.

Yggdrasil Gaming

Yggdrasil is known for combining distinctive themes and polished presentation with increasingly feature-focused slot mechanics.

Its games frequently use Free Spins, multipliers, special symbols and progressive mechanics to create bonus rounds that feel noticeably different from their base games. Feature purchasing is available across selected titles rather than defining the developer’s entire catalogue.

Yggdrasil’s wider approach can include:

• Feature Buy options on selected releases
• Interactive bonus mechanics
• Multipliers and special reel modifiers
• Progression-based features
• Visually distinctive Free Spins rounds

Across its portfolio, Yggdrasil demonstrates how direct feature access can be incorporated into more traditional slot structures without every game following the same Bonus Buy formula.

Different Developers, Different Bonus Buy Styles

The modern Bonus Buy market has moved well beyond a single type of Free Spins purchase. Relax Gaming is known for complex feature mechanics, Hacksaw Gaming frequently pushes towards multiple high-volatility purchase options, ELK Studios uses its distinctive X-iter approach, while Yggdrasil incorporates Feature Buys into selected mechanic-heavy releases.

Other major developers including Pragmatic Play, Nolimit City, Push Gaming and Play’n GO have developed their own approaches as well. As a result, choosing a Bonus Buy slot is increasingly about the type of feature you want rather than simply finding a game with a Buy Bonus button.

Whatever the developer, it’s worth checking the cost, RTP, volatility and mechanics before purchasing a feature. Bonus Buys provide instant access to some of a slot’s most entertaining mechanics, but the higher cost and volatility also mean they can consume a playing budget much faster than ordinary base-game spins.

Our Top Bonus Buy Casinos For UK Players – 2026

Vegas Nova Casino – Best Jackpot Bonus Buy Slots

Bonus Buy Casino: Vegas Nova Casino
Bonus Buy Games: 8,000+
Total Games: 11,000+
Popular Bonus Buy Slots: Gates of Olympus, Le Digger, Big Bass Bonanza, Le Bandit, Gold Blitz
Sports Betting: Not Available
Our Overall Rating: 9.8/10

The selection isn’t limited to slots either. Vegas Nova also provides a comprehensive live casino with games including:

• Live Blackjack
• Roulette
• Baccarat
• Live game shows
• Interactive dealer games

This gives players plenty of alternatives when they want a break from Bonus Buy slots, with the live casino accessible across both desktop and mobile devices.

Promotions add another dimension to the Vegas Nova experience. New and returning players can find a mixture of welcome bonuses, Free Spins, cashback and reload promotions, providing ongoing offers beyond the initial sign-up package.

For players primarily interested in Bonus Buy slots, Vegas Nova stands out for the sheer variety available. Its combination of thousands of feature-purchase games, jackpot titles, major software providers and a large overall casino library makes it one of our leading Bonus Buy Casino choices.

Rivo Casino – Best Bonus Buy Casino for Promotions

Bonus Buy Casino: Rivo Casino
Bonus Buy Games: 7,600+
Total Games: 10,000+
Popular Bonus Buy Slots: Gold Digger, Money Train, Big Bass Splash, Le Bandit, Sweet Bonanza, Immortal Romance
Sports Betting: Not Available
Our Overall Rating: 9.7/10

The games library covers far more than conventional slots. Players can explore a varied selection including:

• Bonus Buy slots
• Megaways games
• Jackpot slots
• High-volatility releases
• Crash games
• Fishing games
• Scratch cards
• Classic book-style slots

This variety makes Rivo suitable for players who enjoy straightforward slots as well as those looking for Feature Buys, multipliers and more volatile game mechanics.

Promotions are where Rivo Casino particularly stands out. Alongside its welcome package, returning players can find a variety of ongoing offers that can include:

• Reload bonuses
• Cashback promotions
• Free Spins
• VIP rewards
• Regular player offers
• Exclusive promotions

Rivo is also a Credit Card Casino offering flexible banking, including credit card options alongside alternative payment methods, giving UK players additional choice when funding their accounts.

Its combination of Bonus Buy variety, regular promotions and a large overall games library makes Rivo Casino particularly appealing to players who want ongoing rewards rather than a casino focused entirely on its initial welcome offer.

Bananzia Casino – Largest Bonus Buy Selection for UK Players

Bonus Buy Casino: Bananzia Casino
Bonus Buy Titles: 9,500+
Total Games Available: 11,000+
Popular Bonus Buy Slots: Gates of Olympus Super Scatter, Le Viking, Bigger Bass Splash, Cleopatra Megaways
Sports Betting: Yes
Our Overall Rating: 9.9/10

Players aren’t restricted to conventional Bonus Buy slots either. Bananzia’s wider games library includes:

• Bonus Buy slots
• Megaways games
• High RTP slots
• Progressive jackpots
• Crash and instant-win games
• New and exclusive releases
• Live dealer casino games

Bananzia also provides an integrated sportsbook, giving players access to sports betting alongside its extensive casino offering.

Promotions add further value for both new and returning players. The casino combines its welcome package with ongoing offers that can include Free Spins, reload bonuses, cashback and regular promotional campaigns.

For players primarily interested in Bonus Buy slots, it’s the sheer scale of Bananzia’s selection that makes the biggest impression. With thousands of Feature Buy games, major software providers, live casino entertainment and sports betting available from the same platform, Bananzia provides one of the most complete all-round Bonus Buy Casino experiences we’ve reviewed.

How Much Do Bonus Buy Slots Cost?

The cost of a Bonus Buy depends on the individual slot and the type of feature being purchased. Instead of waiting for Scatter symbols or another trigger to activate the bonus naturally, players pay a fixed multiple of their current stake for instant access to Free Spins or another premium feature.

For example, if a Bonus Buy costs 100x the stake and you’re playing at £0.20 per spin, purchasing the feature would cost £20. Increase the stake to £1 and the same 100x feature would cost £100.

Modern Bonus Buy slots can vary considerably in price. Standard features frequently sit somewhere between 50x and 200x the stake, while more extreme games can offer premium purchases costing 300x, 500x or even more.

Bonus Buy Type	Typical Cost	What to Expect
Entry-Level	20x–75x	Lower-cost access to simpler bonus features
Standard	80x–150x	Traditional Free Spins and enhanced mechanics
Premium	150x–300x	Stronger starting conditions and additional features
Super/Enhanced	300x–500x+	Expensive, highly volatile versions of the main bonus

Lower-priced Bonus Buys generally provide a more affordable route into a slot’s special features. These can include standard Free Spins, respins or relatively simple multiplier mechanics without requiring hundreds of times the base stake.

Standard Bonus Buys are the format you’ll encounter most frequently. A feature priced around 100x the stake will often unlock the slot’s primary Free Spins round, where additional Wilds, multipliers, cascades or other mechanics can become active.

Premium and Super Bonus Buys sit at the opposite end of the scale. These features can cost 150x–500x the stake or considerably more on particularly volatile games. The higher price can provide enhanced starting conditions, guaranteed special symbols, larger initial multipliers or access to a more powerful version of the standard bonus.

However, paying more doesn’t guarantee a larger return. A 500x Bonus Buy can still produce a payout worth considerably less than its purchase price. The increased feature cost can also consume a playing budget extremely quickly.

For that reason, the price should always be considered alongside the slot’s volatility, RTP and feature mechanics. Bonus Buys provide a fast way to skip the wait and access the most feature-heavy part of a slot, but they can also represent one of the highest-risk ways of playing it.

Our Top 3 New Bonus Buy Slots UK

Wild Samurai Blaze – Extreme Volatility Bonus Buy Slot

Wild Samurai Blaze is a high-risk Nolimit City release built around aggressive features, escalating multipliers and expensive Bonus Buy options. Its dark Japanese-inspired theme plays out across a 5×4 grid, with the action becoming increasingly unpredictable once the game’s enhanced features begin to activate.

Game Details	Wild Samurai Blaze
Developer	Nolimit City
Volatility	Extreme – 10/10
Maximum Win	50,000x
RTP	96.08%
Bonus Buy RTP	98.71%
Bonus Buy Cost	80x–600x

The main gameplay revolves around the Katana Slash mechanic. Symbols can split and expand across the reels, opening additional opportunities for winning combinations while creating the potential for multiplier chains to develop.

Free Spins take these mechanics further. Multipliers can become increasingly important as the feature progresses, while expanding Wilds and changing reel conditions can quickly transform an otherwise ordinary spin.

Players who don’t want to wait for the bonus naturally can choose between several Bonus Buy options. Prices range from around 80x the stake for standard feature access to as much as 600x for the premium Inferno Spins option. The more expensive purchases provide enhanced starting conditions and greater access to the slot’s most volatile mechanics.

What Stands Out

• Extreme 10/10 volatility
• Maximum win potential of 50,000x
• Katana Slash symbol mechanics
• Expanding Wilds
• Escalating multipliers
• Multiple Bonus Buy choices
• Premium Inferno Spins feature
• Bonus Buy RTP of 98.71%

Wild Samurai Blaze is clearly designed for players who prefer extreme volatility over frequent smaller wins. Its combination of expanding reels, multiplier potential and premium Bonus Buys means features can escalate quickly, although the expensive purchase options also make bankroll management particularly important.

Cash Lab Megaways – Feature-Packed Bonus Buy Slot

Cash Lab Megaways is a Relax Gaming release combining medium-to-high volatility with cascading wins, progressive modifiers and multiple Bonus Buy options. Its futuristic laboratory setting is packed with neon visuals, Energy Cells and multiplier mechanics, creating a modern slot experience without pushing quite as far into extreme volatility as some high-risk Feature Buy games.

Game Details	Cash Lab Megaways
Developer	Relax Gaming
Volatility	Medium / High – 8/10
Maximum Win	12,500x
RTP	96.42%
Bonus Buy RTP	98.34%

The main gameplay revolves around Energy Cells that charge as successful cascades develop. Building the meter can activate additional modifiers, giving individual sequences the opportunity to become progressively more feature-heavy.

Possible modifiers include:

• Symbol upgrades
• Sticky Wilds
• Expanding multipliers
• Additional cascades
• Enhanced reel features

Free Spins take these mechanics further, with multiplier progression becoming increasingly important as the feature develops. Multipliers can carry across cascades, creating the potential for longer chains and significantly stronger combinations when several mechanics work together.

Players looking to skip the wait can use Cash Lab Megaways’ Bonus Buy options for direct access to its main features. Standard purchases provide entry into the regular Free Spins round, while higher-tier options can introduce improved starting conditions and guaranteed multiplier symbols.

What Stands Out

• Medium/high 8/10 volatility
• Maximum win potential of 12,500x
• Energy Cell mechanic
• Cascading wins
• Sticky Wilds
• Expanding multipliers
• Multiple Bonus Buy levels
• Bonus Buy RTP of 98.34%

Cash Lab Megaways offers a good middle ground for Bonus Buy players who want plenty of action without moving into the most extreme volatility levels. The combination of cascades, progressive multipliers and several feature-purchase options gives the game plenty of depth, while its 12,500x maximum win provides substantial potential when the mechanics align.

Mega Forge Megaways – High-Volatility Megaways Bonus Buy Slot

Mega Forge Megaways is a high-volatility Blueprint Gaming release that combines the popular Megaways format with escalating multipliers, expanding Wilds and several Bonus Buy options. Set inside a fantasy-inspired underground forge filled with gold and magical artefacts, the game offers up to 117,649 ways to win.

Game Details	Mega Forge Megaways
Developer	Blueprint Gaming
Volatility	High – 9/10
Maximum Win	20,000x
RTP	96.55%
Bonus Buy RTP	98.80%
Maximum Ways to Win	117,649

The gameplay is built around Forge Symbols, which become increasingly valuable as winning combinations develop. Successful sequences can activate additional mechanics and increase the potential of subsequent cascades.

Features can include:

• Increasing reel multipliers
• Expanding Wilds
• Additional Free Spins
• Enhanced symbol values
• Cascading wins
• Up to 117,649 ways to win

Free Spins are where Mega Forge Megaways really begins to open up. Multipliers can continue building throughout the feature, with consecutive cascades creating opportunities for increasingly valuable combinations as the round progresses.

Players who prefer instant access can choose between three different Bonus Buy options:

• Standard Free Spins Buy
• Enhanced Multiplier Spins
• Ultimate Forge Bonus

The Ultimate Forge Bonus represents the premium option, providing stronger starting multipliers and an increased frequency of Wild symbols. This creates a more aggressive version of the feature for players comfortable with higher volatility.

What Stands Out

• High 9/10 volatility
• Maximum win potential of 20,000x
• Up to 117,649 Megaways
• Progressive multiplier mechanics
• Expanding Wilds
• Cascading wins
• Three Bonus Buy options
• Premium Ultimate Forge Bonus
• Bonus Buy RTP of 98.80%

Mega Forge Megaways is particularly suited to players who enjoy traditional Megaways gameplay but want more emphasis on Bonus Buys and progressive features. The combination of increasing multipliers, expanding Wilds and multiple purchase options gives the slot plenty of depth, while its 20,000x maximum win provides substantial upside when the strongest mechanics combine.

How UK Players Can Choose the Best Bonus Buy Slot

With thousands of Bonus Buy slots now available, choosing a game based purely on its maximum win isn’t always the best approach. Feature cost, volatility, RTP and the mechanics inside the bonus can all have a major impact on how the slot actually plays.

A useful starting point is to compare the following:

What to Check	Why It Matters
Bonus Buy Cost	Determines how much of your balance each feature uses
Volatility	Indicates how dramatically results can fluctuate
RTP	Shows the game’s theoretical long-term return
Maximum Win	Shows the highest advertised payout potential
Bonus Mechanics	Determines what actually happens inside the feature
Buy Options	Some games offer several standard, enhanced and Super Bonuses

Start With the Feature Cost

Before purchasing any feature, check how much it costs relative to your normal stake. A Bonus Buy might cost anywhere from around 50x to several hundred times the base bet, meaning even relatively small stakes can result in expensive purchases.

For example, a 100x Bonus Buy costs £20 at a £0.20 stake, while a 500x feature at the same stake costs £100.

Players working with smaller budgets may therefore want to prioritise lower-priced Bonus Buys rather than repeatedly purchasing premium features. More expensive doesn’t automatically mean better value, and a costly bonus can still return less than its purchase price.

Compare the Available Bonus Buy Options

Modern slots increasingly provide more than one way to buy the bonus. Instead of a single Free Spins purchase, a game might offer several Feature Buy levels with different prices and starting conditions.

These can include:

• Standard Free Spins
• Enhanced Free Spins
• Multiplier-focused bonuses
• Guaranteed special symbols
• Super or premium Bonus Buys
• Gamble-style feature upgrades

Premium options might provide additional spins, stronger starting multipliers or improved feature conditions, but these advantages usually come at a considerably higher price.

The important question isn’t simply which feature is strongest, but whether the additional mechanics justify the increased cost and volatility.

Check RTP, Volatility & Maximum Win Together

RTP is useful when comparing Bonus Buy slots, but it shouldn’t be considered in isolation. A theoretical RTP of 96%, for example, describes the expected return across a very large number of game rounds rather than what an individual player should expect from a single session or purchased bonus.

Volatility provides additional context. Highly volatile games can produce substantial differences between individual results, including Bonus Buys that return very little alongside occasional significantly larger wins.

Maximum win tells you the game’s upper payout limit, but again, it doesn’t indicate how frequently that amount is achievable.

Rather than simply looking for the highest number, compare all three:

• RTP
• Volatility
• Maximum win potential

A 50,000x maximum win might look more attractive than 10,000x, but that doesn’t automatically make it the better game.

Understand the Bonus Mechanics

Two Bonus Buys with identical prices can provide completely different experiences depending on the mechanics involved.

Popular features include:

• Cascading wins
• Sticky Wilds
• Expanding Wilds
• Persistent multipliers
• Multiplier chains
• Symbol upgrades
• Expanding reels
• Respins
• Collect mechanics
• Additional Free Spins

Understanding how these features interact gives you a much clearer idea of what you’re actually purchasing.

Where available, demo play can be useful for learning the basic mechanics without using real money. Slot reviews, paytables and gameplay videos can also help explain more complicated features before playing.

Match the Slot to Your Preferred Playing Style

Bonus Buy developers take very different approaches to their games. Some focus on straightforward Free Spins purchases, while others build their slots around extreme volatility and several increasingly expensive Feature Buy levels.

Players who prefer a more measured experience may favour lower feature costs and medium-to-high volatility. Those specifically looking for aggressive gameplay might instead prefer high or extreme volatility, large multipliers and premium Bonus Buys.

Neither approach is automatically better. What matters is understanding the type of game you’re choosing before committing money to its features.

Our Bonus Buy Checklist

Before buying a feature, we recommend checking:

• How many times your stake the Bonus Buy costs
• Whether multiple Feature Buy levels are available
• The RTP for the game and, where published, the Bonus Buy mode
• The slot’s volatility rating
• Maximum win potential
• What mechanics activate during the bonus
• Whether premium purchases provide different starting conditions
• How much of your overall playing budget one purchase represents

The best Bonus Buy slot isn’t necessarily the game with the biggest maximum win or most expensive Super Bonus. A better approach is to find a game where the feature price, volatility and mechanics match both your budget and the type of slot experience you’re looking for.