Bonus Buy Slots Not on GamStop

What Are Bonus Buy Slots?

Bonus buy slots, also known as feature buy slots, feature drop slots or buy bonus slots, are online slot games that allow players to purchase direct access to the bonus round or free spins feature instead of waiting for it to trigger naturally during regular gameplay.

In a standard slot game, the bonus feature is triggered when a specific combination of scatter symbols lands on the reels — typically three or more scatters. This can take hundreds of spins, and there is no guarantee of when (or if) the feature will trigger in any given session. Bonus buy slots remove this uncertainty by offering a button that, for a set price, instantly activates the bonus round.

The Appeal of Bonus Buy

Bonus buy slots became enormously popular among UK players for several reasons:

• Instant access to the exciting part: For many players, the bonus round is where the real excitement lies. Bonus buy eliminates the potentially tedious grind of the base game.
• Time efficiency: Players with limited time can jump straight to the feature they want to play, rather than spending hours waiting for a natural trigger.
• Predictable entry cost: You know exactly how much the bonus round will cost upfront, rather than spending an unknown amount on base game spins hoping for a trigger.
• Higher win potential: Bonus rounds are where the biggest wins occur, and buying the feature gives you guaranteed access to that potential.
• Content creation: Many streamers and content creators prefer bonus buy because it provides more exciting footage for their audiences.

How the Cost Is Calculated

The cost of buying a bonus round is typically expressed as a multiple of your current bet size. Common pricing structures include:

• Standard bonus buy: Usually 50x to 100x your bet (e.g., £50–£100 at a £1 stake)
• Enhanced bonus buy: Some games offer different tiers of bonus buy at varying costs. Higher-tier purchases may guarantee a certain number of free spins or start with enhanced multipliers.
• Ante bet: A milder version where you increase your base bet by a percentage (typically 20%–25%) to double your chances of triggering the bonus naturally. This is technically distinct from a full bonus buy but serves a similar purpose.

Why the UKGC Banned Bonus Buy Slots

In September 2024, the UK Gambling Commission officially prohibited the bonus buy feature at all UKGC-licensed operators. This was a significant regulatory decision that affected millions of UK players.

The UKGC’s Reasoning

The Gambling Commission cited several concerns that led to the ban:

• Increased spending intensity: The UKGC found that bonus buy slots led to significantly higher spending per session compared to standard slots. The ability to spend 50x–100x your stake in a single click was deemed to increase the risk of harm.
• Reduced natural breaks: Normal slot play includes periods of lower-intensity base game spins that provide natural breaks and time for reflection. Bonus buy removes these breaks, potentially leading to more intense and sustained gambling sessions.
• Vulnerability concerns: The UKGC expressed concern that bonus buy features could be particularly harmful to vulnerable players, including those with gambling disorders, by enabling rapid escalation of spending.
• Player tracking data: Analysis of player data from UKGC-licensed operators showed that players who frequently used bonus buy features exhibited higher rates of problem gambling indicators.
• Alignment with existing restrictions: The ban was part of a broader pattern of UKGC restrictions, including limits on autoplay speed, stake limits on certain products and enhanced affordability checks.

Industry Response

The ban was met with mixed reactions from the industry:

• Game providers: Major providers like Pragmatic Play and Hacksaw Gaming created separate versions of their games for the UK market with the bonus buy feature disabled, whilst maintaining the feature in versions supplied to non-UKGC operators.
• UKGC operators: Complied with the ban, removing bonus buy functionality from all games on their platforms.
• Non GamStop operators: Continued to offer bonus buy slots without restrictions, as the UKGC ban only applies to UKGC-licensed operators.
• Players: Many UK players who valued the bonus buy feature began seeking out non GamStop casinos where it remained available.

How Bonus Buy Slots Work

Understanding the mechanics of bonus buy helps you make informed decisions about when and how to use this feature.

The Mathematics

When a game provider designs a bonus buy feature, the cost is calculated to be mathematically equivalent to the average cost of triggering the bonus through natural play. In other words, if it takes an average of 200 spins to trigger the bonus at a £1 stake (£200 spent), the bonus buy might be priced at 100x (£100) — offering a discount because you eliminate the variance of the trigger.

However, the relationship is not always straightforward. Some important considerations:

• The buy price is typically below the average trigger cost: This is because the player sacrifices the potential wins from base game spins. During those 200 spins waiting for a natural trigger, you would also win some money back from smaller base game wins.
• The bonus round outcome is still random: Buying the bonus does not guarantee a good result. The free spins or bonus round plays out with the same randomness as a naturally triggered bonus. You can buy a £100 bonus and win £10 or £10,000.
• The feature itself is identical: Whether you trigger the bonus naturally or buy it, the bonus round mechanics, multiplier potential and win calculations are exactly the same.

Types of Bonus Buy

Different games offer different types of bonus buy mechanics:

Standard Bonus Buy: A simple button that activates the standard free spins or bonus round for a fixed cost (typically 50x–100x bet). This is the most common type.

Tiered Bonus Buy: Some games offer multiple buy options at different price points. For example, a game might offer a basic bonus round for 60x your bet and an enhanced version (with extra multipliers or more free spins) for 150x your bet.

Ante Bet: Not a true bonus buy, but a related feature. By increasing your base bet by 20%–25%, your chances of triggering the bonus naturally are doubled. This is a compromise between standard play and full bonus buy.

Feature Drop / Feature Trigger: Some providers use different names for what is essentially the same mechanic. Hacksaw Gaming, for example, uses the term “Feature Buy” whilst Pragmatic Play often labels it as “Buy Bonus”.

Lucky Buy / Wheel Buy: A variation where the buy price is variable, determined by a wheel spin or random selection. The potential cost ranges from a low to a high amount, adding an extra layer of excitement to the purchase itself.

Best Bonus Buy Slot Games

The following games represent the best bonus buy slots currently available at non GamStop casinos, selected based on entertainment value, win potential, RTP and overall design quality.

Gates of Olympus (Pragmatic Play)

Widely regarded as the king of bonus buy slots, Gates of Olympus features a Greek mythology theme with Zeus presiding over a 6x5 grid. The buy bonus costs 100x your bet and triggers 15 free spins with increasing multipliers. The tumble mechanic means symbols cascade after every win, and random multipliers of 2x to 500x can appear on any spin. Maximum win potential is 5,000x your stake. RTP: 96.50%.

Sweet Bonanza (Pragmatic Play)

A candy-themed slot that has become one of the most popular games in the world. Sweet Bonanza uses a cluster-pays mechanic on a 6x5 grid, with tumbling reels and multiplier bombs that can reach up to 100x during free spins. The bonus buy costs 100x your bet and awards 10 free spins. Maximum win potential is 21,100x your stake. RTP: 96.48%.

Wanted Dead or a Wild (Hacksaw Gaming)

A Wild West-themed slot with stunning visuals and innovative mechanics. The bonus buy options include a standard Duel at Dawn feature for 80x your bet and the enhanced Great Train Robbery feature for higher costs. The game features multiple bonus types, including a final showdown where multipliers combine for potentially enormous wins. Maximum win potential is 12,500x your stake. RTP: 96.38%.

Mental (Nolimit City)

One of the most notorious and extreme bonus buy slots ever created, Mental is set in an asylum and features Nolimit City’s signature xWays and xNudge mechanics. The game offers multiple bonus buy options at different price points, including the Mental bonus for the full experience. Known for its extreme volatility, Mental can deliver wins of up to 66,666x your stake. RTP: 96.08%. This is a game for experienced players who understand and accept extreme variance.

Sugar Rush (Pragmatic Play)

A colourful candy-themed slot with a unique multiplier grid mechanic. Winning symbols increase the multiplier value of their position on the grid, and these multipliers persist through the entire free spins round. The bonus buy costs 100x your bet and delivers 7 free spins. The escalating multipliers make this one of the most exciting bonus buy experiences available. Maximum win potential is 5,000x your stake. RTP: 96.50%.

Starlight Princess (Pragmatic Play)

The anime-styled companion to Gates of Olympus, using the same proven mechanics in a different visual theme. Random multipliers of up to 500x can appear during free spins, and the tumble mechanic ensures multiple chances to win on every spin. The bonus buy costs 100x your bet for 15 free spins. Maximum win potential is 5,000x your stake. RTP: 96.50%.

Chaos Crew (Hacksaw Gaming)

A vibrant, graffiti-styled slot featuring three distinct bonus rounds. The bonus buy allows you to purchase any of the three features at different price points, giving you control over which type of bonus you want to play. The game features Wild Swap, Multiplier and combined bonus rounds. Maximum win potential is 10,000x your stake. RTP: 96.30%.

Fire in the Hole (Nolimit City)

A mining-themed slot featuring the xBomb wild mechanic, which destroys adjacent symbols and increases the multiplier with each explosion. The bonus buy costs 66x your bet and offers one of the most satisfying chain reaction mechanics in modern slots. Maximum win potential is 60,000x your stake. RTP: 96.06%.

Razor Shark (Push Gaming)

An underwater-themed slot with innovative mystery stacks and a nudge mechanic in the bonus round. The bonus buy triggers the feature with mystery stacks already present on the reels. Known for creating tense, gripping gameplay during the free spins round. Maximum win potential is 50,000x your stake. RTP: 96.70%.

Money Train 3 (Relax Gaming)

The third instalment in the hugely popular Money Train series, featuring a bonus round with persistent multipliers and special symbols that can transform, multiply and add value. The bonus buy costs 80x your bet. The game has a staggering maximum win potential of 100,000x your stake. RTP: 96.10%.

Best Providers for Bonus Buy Slots

Not all game providers offer bonus buy features. Here are the leading providers in this space, ranked by the quality and variety of their bonus buy offerings.

Pragmatic Play

Pragmatic Play is the undisputed leader in bonus buy slots, with more feature buy titles than any other provider. Their games dominate the most-played lists at non GamStop casinos, with titles like Gates of Olympus, Sweet Bonanza, Sugar Rush, Starlight Princess, The Dog House Megaways and Big Bass Bonanza all featuring the bonus buy option. Pragmatic Play’s bonus buy is typically priced at 100x your bet, and their games are known for consistent quality, excellent mobile optimisation and entertaining bonus rounds.

Hacksaw Gaming

Hacksaw Gaming has built its reputation almost entirely around bonus buy slots. Every game they release features the option, and they are known for innovative mechanics, stunning visual design and high volatility gameplay. Key titles include Wanted Dead or a Wild, Chaos Crew, RIP City, Dork Unit and Le Bandit. Hacksaw’s bonus buy costs vary between games, and they often offer tiered buy options with different price points and enhanced features.

Nolimit City

Nolimit City is famous for pushing the boundaries of slot design, and their bonus buy offerings are no exception. Known for extreme volatility and mature themes, their games include Mental, San Quentin xWays, Tombstone RIP, Fire in the Hole and Misery Mining. Nolimit City’s xWays, xNudge and xBomb mechanics create unique gameplay experiences that are particularly well-suited to the bonus buy format. Their maximum win potentials are often the highest in the industry.

Push Gaming

Push Gaming produces a smaller number of games but maintains exceptionally high quality. Their bonus buy titles include Razor Shark, Jammin’ Jars 2, Fire Hopper and Bison Battle. Push Gaming slots are known for their polished mechanics and satisfying gameplay loops, with bonus rounds that provide genuinely engaging experiences.

Relax Gaming

Relax Gaming’s Money Train series is one of the most successful slot franchises ever created, and all three titles feature bonus buy. They also produce other high-quality titles with feature buy options. Relax Gaming is known for innovative bonus mechanics and massive win potential, with Money Train 3 offering one of the highest maximum wins in the industry at 100,000x.

Other Notable Providers

• ELK Studios: Known for the Legends series and innovative X-iter feature buy mechanic
• Big Time Gaming: Creators of the Megaways mechanic, with bonus buy available on many titles
• Red Tiger: Offers feature buy on several popular titles including Gonzo’s Quest Megaways
• Blueprint Gaming: Provides bonus buy on their Megaways titles and other popular games

RTP Differences: Base Game vs Feature Buy

An important aspect of bonus buy slots that many players overlook is how the Return to Player (RTP) can differ between base game play and feature buy play.

Understanding RTP in Bonus Buy Context

The published RTP for a slot game represents the theoretical return over millions of spins, combining both base game and bonus round results. When you buy the bonus directly, you are skipping the base game entirely, which can affect the effective RTP of your session.

How It Works in Practice

• Base game RTP: The base game typically has a lower RTP than the overall game, because some of the “return” is concentrated in the bonus round wins. If a game has a 96.5% overall RTP, the base game might contribute an effective RTP of around 40–50%, with the bonus round making up the rest.
• Bonus buy RTP: When you buy the bonus, the RTP of that specific purchase is calculated based on the buy cost versus the expected average return from the bonus round. This is typically close to or slightly below the overall published RTP.
• Ante bet RTP: Games with ante bet features typically show a slightly lower RTP when the ante bet is activated (often 0.1%–0.3% lower) because you are paying a premium for the doubled trigger chance.

Examples of RTP Configurations

• Gates of Olympus: Published RTP of 96.50%. Ante bet version: 96.50% (same overall but with higher bet cost). Bonus buy RTP is calculated at approximately 96.50% based on the 100x buy cost.
• Sweet Bonanza: Published RTP of 96.48%. Ante bet version: 96.48%. The bonus buy is designed to deliver returns consistent with the published RTP over large samples.
• Wanted Dead or a Wild: Published RTP of 96.38%. Different bonus buy options may have slightly different effective RTPs based on their pricing.

The Variance Factor

Perhaps more important than RTP for bonus buy slots is variance (volatility). Most bonus buy slots are high or extreme volatility, meaning that individual bonus rounds can produce results that vary enormously from the mathematical average. You might buy 10 bonuses and lose on 8 of them, then win massively on one. This is the nature of high-volatility gameplay, and it is amplified when you are exclusively buying bonuses rather than mixing in base game play.

Strategy Tips for Bonus Buy Slots

Whilst bonus buy slots are ultimately games of chance, there are strategies you can employ to maximise your enjoyment and manage your bankroll effectively.

Bankroll Management

• Budget for multiple buys: Never put all your money into a single bonus buy. The variance is extreme, and one bonus round is essentially one spin of a very expensive roulette wheel. Ideally, your session bankroll should cover at least 5–10 bonus buys at your chosen stake.
• Set a loss limit: Before you start, decide the maximum amount you are willing to lose in the session. When you hit this limit, stop. No exceptions.
• Take profits: If you hit a big win, withdraw at least a portion of it. The temptation to reinvest everything into more bonus buys is strong but often leads to giving back your winnings.
• Choose your stake carefully: If a bonus buy costs 100x your bet, a £1 stake means £100 per buy. Make sure you are comfortable with this amount and that it represents a responsible proportion of your bankroll.

Game Selection

• Check the RTP version: Always verify the RTP within the game’s information screen. Play only games running at the highest available RTP version.
• Understand the volatility: Higher volatility means bigger potential wins but also more frequent losing bonus rounds. Match the volatility to your bankroll and risk tolerance.
• Know the mechanics: Understand how the bonus round works before buying it. Play the base game first (or watch gameplay videos) to learn the mechanics, multiplier systems and win patterns.
• Compare buy costs: Different games have different bonus buy costs relative to their win potential. A game with a 100x buy cost and 5,000x max win has a different risk/reward profile than one with a 60x buy cost and 100,000x max win.

When to Buy vs When to Play Normally

• Buy when time is limited: If you only have 20 minutes to play, bonus buy ensures you spend that time in the exciting part of the game.
• Play normally for longer sessions: If you have more time, mixing base game play with occasional bonus buys extends your session and provides a more varied experience.
• Consider the ante bet: If you enjoy the anticipation of a natural trigger but want better odds, the ante bet is a good compromise.
• Never chase with bonus buys: If you have had several losing bonus rounds, do not increase your stake and buy another. This is the slot equivalent of chasing losses at a table game.

Where to Play Bonus Buy Slots in 2026

Since the UKGC banned bonus buy slots at licensed UK casinos, players need to use non GamStop casinos to access these features. Here are our top recommendations for playing bonus buy slots as a UK player.

Kaasino — Best for Bonus Buy Variety

Kaasino offers one of the largest selections of bonus buy slots among non GamStop casinos, with games from Pragmatic Play, Hacksaw Gaming, Nolimit City, Push Gaming and dozens more providers. The interface makes it easy to filter for games with the bonus buy feature, and the casino runs regular promotions specifically for slot players. With fast withdrawals and responsive customer support, Kaasino is our top pick for bonus buy slot enthusiasts.

Visit Kaasino

Winstler — Best for High Roller Bonus Buys

Winstler caters particularly well to players who enjoy bonus buy slots at higher stakes. With generous table limits, a VIP programme that rewards slot play, and an excellent selection of high-volatility titles, it is the ideal choice for serious bonus buy players. The welcome bonus is generous and the wagering requirements are fair, allowing you to use bonus funds on bonus buy spins.

Visit Winstler

MadCasino — Best for New Releases

MadCasino is consistently among the first non GamStop casinos to add new bonus buy slot releases. If you want to play the latest titles from Hacksaw Gaming, Nolimit City and other innovative providers, MadCasino is the place to be. The casino also offers regular free spin promotions on new bonus buy slots, giving you the chance to try new games without risking your own money.

Visit MadCasino

For our complete ranked list of recommended casinos, see our guide to the best non GamStop casinos for UK players.

Autoplay: Another Feature Available at Non GamStop Casinos

Alongside bonus buy, another feature restricted by the UKGC that remains available at non GamStop casinos is autoplay. Whilst not as headline-grabbing as the bonus buy ban, the UKGC’s restrictions on autoplay have also been a point of frustration for some players.

UKGC Autoplay Restrictions

At UKGC-licensed casinos, autoplay functionality has been significantly curtailed:

• Mandatory loss limits must be set before autoplay can be activated
• Autoplay must pause after a bonus round is triggered
• Regular “reality check” interruptions are required
• Some operators have removed autoplay entirely

Autoplay at Non GamStop Casinos

Non GamStop casinos generally offer full, unrestricted autoplay functionality, including:

• Unlimited autoplay spins
• Autoplay through bonus rounds
• Customisable stop conditions (win/loss limits, on feature trigger, etc.)
• Turbo mode for faster spin speeds

For players who prefer to set up autoplay and watch the results, non GamStop casinos provide a significantly more flexible experience. However, please be mindful of the increased speed of play and set personal limits to ensure you remain in control of your spending.

Responsible Play with Bonus Buy Slots

Bonus buy slots represent one of the highest-intensity forms of online slot play. The combination of high stakes (50x–100x per buy), extreme variance and the addictive nature of chasing big wins means that responsible gambling practices are especially important.

Key Responsible Gambling Tips

• Set a strict budget: Decide before you play how much you can afford to lose. Bonus buy slots can consume bankroll very quickly — a £1 stake with 100x buy means £100 per bonus round.
• Never chase losses: After a losing bonus buy, the temptation to buy another immediately is intense. Take a break. The game will still be there later.
• Understand the odds: The majority of bonus buys will return less than their cost. Big wins are exciting but rare. Make sure you are comfortable with frequent losses in exchange for occasional big wins.
• Use casino tools: Set deposit limits, loss limits and session time limits at your chosen casino. These tools exist to help you stay in control.
• Take breaks: Step away from the screen regularly. If you have been playing for more than an hour, take at least a 15-minute break.
• Never gamble with money you cannot afford to lose: This applies to all gambling but is especially relevant for high-volatility bonus buy slots where significant amounts can be lost quickly.