Bonus Buy Slots UK – Casinos Offering Bonus Buy Slots

Bonus buy slots have now fast become one of the most popular slot game feature additions to hit the market. It allows players to skip the base game and jump straight into those exciting bonus rounds. The bonus feature is also the most lucrative part of the game where the big money can be won!

Bonus buy slots give players the ability to skip through the entire base game and gain access to the huge wins, multipliers, sticky wilds, re-spins and much more! So, check out our latest guide around all things bonus buy slots for UK players.

What are ‘Bonus Buy Slots’?

Bonus Buy slots can also be known as buy free spins or buy feature slots but they all mean the exact same thing. They are usually accessible from the side of the playing grid and clearly displayed. Casinos may also in many cases have a specific bonus buy slots section to select the best and most exciting games that feature them, making it easy for players to find them and get picking up those incredible features and potential big wins.

How Much Does a Bonus Buy Usually Cost?

The price of buying a feature of a slot design can vary greatly. This comes down to the volatility and the overall maximum win potential. Most of these titles price the feature as a multiple of your current stake, rather than a specific flat price. Every game is different but bonus buy slots are usually currently sitting between 50x and 200x bets, with some premium features even reaching higher.

Here is the typical pricing bands that are usually seen at bonus buy slots:

20x–75x Your Bet

These are the “entry-level” buys and are usually tied to simpler free spins or a basic bonus mode. Volatility is often lower to mid-range, which can mean more consistent results but smaller peak payouts.

Examples players often associate with lower-cost options:

• Chaos Crew 2 (Hacksaw Gaming) – quicker access to feature style gameplay
• The Dog House Megaways (Pragmatic Play) – classic free spins options with wild mechanics

Around 100x Your Bet

This is the most common price point and tends to unlock the “standard” version of the bonus round. Many players prefer this tier because it usually offers a balanced mix of excitement, risk, and potential.

Common examples in the 100x range include:

• Gates of Olympus (Pragmatic Play) – free spins with multipliers
• Sugar Rush (Pragmatic Play) – cluster wins and multiplier zones
• Book of Shadows (Nolimit City) – high-energy bonus potential

150x–200x+ Your Bet

Higher priced buys are often designed to be more volatile. These features may include boosted mechanics like extra multipliers, stronger symbol setups, or enhanced bonus rules. They’re typically aimed at players chasing higher top-end outcomes.

Examples often linked to premium buy tiers:

• Wanted: Dead or a Wild (Hacksaw Gaming) – multiple buy options with different bonus styles
• Gem Elevator (Pragmatic Play) – feature focused high risk gameplay
• Dead or a Wild (Hacksaw Gaming) – stronger “high stakes” buy structures

Top Casinos With Bonus Buy Slots For UK Players

Many UK players are now looking to find international non uk casinos that feature bonus buy slots. These casinos often promote much large slot categories to choose from, including the likes of megaways and high RTP releases. Here is our latest list of the top three bonus buy casinos:

SpinShark Casino – Top Bonuses and Promotions

Operator: SpinShark Casino
Licensed: Yes
Banking Methods: 32
Games Available: 10,500+
Payout Speed: Same day – 24 hours
Available Products: Slots, Live Casino, Table Games, Mini Games

SpinShark casino is currently standing as one of the top casinos offering bonus buy slots to UK players. They offer attractive on-going bonuses and promotions with further cashback style incentives. They also back this up with an extensive live casino resource and large general casino with a huge section of bonus buys. SpinShark casino also offers 32 banking methods with the likes of credit cards betting also available.

Wildzy Casino – Industry Best Wagering Requirements

Operator: Wildzy Casino
Licensed: Yes
Banking Methods: 30+
Games Available: 10,800+
Payout Speed: Same day – 24 hours
Available Products: Slots, Live Casino, Table Games, Instant Win Games, Sports Betting

Wildzy casino is one of the current stand out platforms offering bonus buy slots for UK players. They have a vast general casino and live casino resource, with over 10,800 different titles to choose from. They also back this up with incredible bonuses and promotions including industry best 10x wagering requirements, which is incredible value. They again are a credit card casino, offering over 30 different payment methods.

Harry Casino – Overall Best Bonus Buy Casino

Operator: Harry Casino
Licensed: Yes
Banking Methods: 28+
Games Available: 10,500+
Payout Speed: Same day – 24 hours
Available Products: Slots, Live Casino, Table Games, Instant Win Games

Harry casino was released back in 2025 but has continued to grow in popularity and now stands as the overall best bonus buy casino that is available for UK players. They boost a games library of over 10,500 titles, covering megaways and bonus buy games. Harry casino is then providing some incredible bonuses and promotions, with the industry best VIP program in place. They also offer a vast selection of payment methods, including Apple Pay, Google Pay, credit card betting and many more! This is why it is down as our best bonus buy casino currently available for UK players.

Do Bonus Buy Features Affect RTP?

RTP (Return to Player) is the long term statistical estimate of what a slot will pay out over time. RTP is usually calculated across a huge sample size and many different slot games have different RTP profiles depending on which one you select.

When it comes to bonus buy slots and you will almost always find that the RTP is higher than the base layer on a game, due to you skipping past the low value spins and going to the feature part of the game. However, variance still plays a major role and profits or positive results are never guaranteed at bonus buy slots.

Typical pattern players see:

• Base game RTP: often around 94%–97%
• Bonus buy RTP (in some games): can be higher, sometimes 97%–99%+

If RTP matters to your selection, check the info panel/paytable because some games list separate RTP values by mode.

Choosing the Right Bonus Buy Slot: A Simple Checklist

1) Pick a volatility level that matches your risk tolerance

• Low volatility: steadier, smaller wins
• Medium volatility: balanced gameplay
• High volatility: fewer wins, bigger swings and higher max-win potential

2) Check RTP (and whether the bonus buy has a different RTP)

Aim for titles with stronger RTP when possible, especially if you’re buying features frequently.

3) Understand the feature cost before you commit

A 100x buy can drain a bankroll quickly if repeated, so players should consider how many attempts you can realistically afford.

4) Choose bonus mechanics you actually enjoy

Some players love multipliers, others prefer sticky wilds, tumbling wins, or expanding grids. Picking mechanics you like makes the experience better, even when results vary.

5) Use demo mode first

Demo play helps you understand pacing, volatility, and the bonus structure without spending real money.

Why are Bonus Buy Slots Restricted in the UK?

Bonus buy slots have been restricted at UKGC casinos, since being banned in 2019. This was put in place in order to push safer gambling measures, such as the credit card casino ban. The concern was that being able to pay for instant access to high volatility features can encourage fast and dangerous spending, which could also result in quick losses. This ban led to UK players then having to look overseas in order to be able to play bonus buy slots.

How UK Players Can Still Access Bonus Buy Slots

Despite the ban being enforced across the UK, it is still possible for UK players to find bonus buy slots. These are now available at non uk casinos operating away from the UKGC but still allowing UK players. This are internationally licensed casinos, which are holding reputable licenses from the likes of Curacao, Malta and Gibraltar for example. It is really important for UK players to ensure they are checking these casinos are holding a license to ensure they are playing safely, when away from the UKGC regulations.

FAQ: Bonus Buy Slots

• What is a bonus buy slot?

  A slot that lets you pay a fixed stake multiple to enter the bonus round instantly.

• What do bonus buys usually cost?

  Often 50x–200x your bet, with some premium tiers higher.

• Are there different types of bonus buys?

  Yes. Standard buys, enhanced/super buys, mystery/random buys, and multi-tier menus are common formats.

• Why do players like buying free spins?

  It gives instant access to the feature, concentrates gameplay on high-action moments, and may offer different RTP profiles in certain titles (game dependent).