Slots Online with Buy Bonus Round: Maximize Your Winning Potential

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By Lars Wahlström - Updated 2023-05-25

Reading Time: 9 minutes

Slots Online with Buy Bonus Round: Maximize Your Winning Potential

Online slots with bonus buy features have gained tremendous popularity among casino enthusiasts in recent years. These innovative games allow players to bypass the usual base game rounds and jump into the exciting bonus features by paying a premium.

The bonus buy option offers players a new level of control and a chance to experience the thrills of bonus rounds on demand, often leading to higher RTP rates and the potential for lucrative payouts.

One notable example of a bonus buy slot is Medusa Megaways, a high-volatility game with an average RTP of 96.28%, increasing to 97.63% when utilizing the bonus buy feature. By purchasing the feature for 100x the bet, players can instantly access the bonus round and experience the full potential of this captivating game.

Other popular bonus buy online slots include Sweet Bonanza, Money Train 2, and Buffalo Toro Max Megaways.

As the online casino scene continues to evolve, more game providers such as Relax Gaming, Pragmatic Play, and No Limit City are stepping up to provide diverse slots with bonus buy options. This trend is set to continue growing, offering avid gamers even more captivating ways to maximize their winnings and enjoy premium gaming experiences at their fingertips.

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Understanding Slots Online with Buy Bonus Rounds

Fundamentals of Online Slots

Online slots are virtual versions of traditional slot machines, offering a variety of themes, paylines, and features designed to engage players and provide an enjoyable gaming experience. They use random number generators (RNGs) to ensure fair and random outcomes for each spin. Some common elements in online slots include:

  • Reels: Vertical columns displaying symbols that spin and form winning combinations
  • Paylines: Lines on which winning symbol combinations appear
  • Symbols: Images that can form winning combinations
  • Wilds: Symbols that can substitute for other symbols to create winning combinations
  • Scatters: Symbols that can trigger bonus features or free spins
  • Multipliers: Features that multiply your winnings by a particular value

Bonus Rounds Explained

Bonus rounds are special features in online slots that can be triggered by specific events, such as landing a certain number of scatter symbols. They often introduce a new game screen with unique mechanics or offer additional rewards like free spins and multipliers. Some popular types of bonus rounds include:

  • Free Spins: Players receive a set number of spins without using their balance
  • Pick and Click: Players choose from a selection of hidden prizes
  • Wheel of Fortune: Players spin a wheel to win various rewards
  • Multi-Level: Players progress through various stages, each offering different challenges and rewards

Bonus Buy Feature

The Bonus Buy feature (Feature Buy or Bonus Buy Slots) allows players to bypass the traditional method of triggering bonus rounds by paying a premium upfront. The price of purchasing a bonus round is often set at around 100 times the player's current stake. Some key points about Bonus Buy features:

  • Instant access to bonus rounds: Players don't need to wait for specific conditions to trigger the bonus game naturally.
  • Higher risk and reward: The premium paid for instant access to bonus features can be substantial, creating a higher risk but increased potential rewards.
  • Limited availability: Some jurisdictions restrict or prohibit the Bonus Buy feature due to its potential to promote problem gambling behaviour.

Not all online slots offer the Bonus Buy option, and it should be used with caution, as it can lead to increased losses if misused. Popular online slots with Bonus Buy features include Medusa Megaways, Pillars of Asgard, and 300 Shields Extreme.

Understanding Slots Online with Buy Bonus Rounds

Top Software Providers and Slot Games

This section discusses some top software providers and their popular slot games featuring bonus buy options.


NetEnt is a well-known software provider for online casino games. One of their popular games with a bonus buy option is:

  • Dead or Alive 2: A high volatility game with an RTP of 96.82%. The bonus buy feature allows players to access the free spins round directly.

Relax Gaming

Relax Gaming is a notable software provider with various engaging slot games. Some of the popular titles are:

  • Money Train: A highly volatile game with a 96.2% RTP.
  • Money Train 2: A sequel to the original game, it has an RTP of 96.4% and features an exciting bonus buy option.

Pragmatic Play

Pragmatic Play offers a wide selection of innovative slot games. Some noteworthy titles are:

  • Extra Chilli: A high volatility Megaways slot with an RTP of 96.15%.
  • Ramses Revenge: A high volatility game with a 96.15% RTP featuring an interesting bonus buy option.

Big Time Gaming

Big Time Gaming is well-regarded for its creative slot games. Their popular titles include:

  • White Rabbit: A Megaways slot with a 97.24% RTP. It offers an exciting bonus buy feature.


Blueprint is another popular software provider. They offer engaging slot games, such as:

  • Medusa Megaways: A high volatility game with an RTP of 96.28% and a bonus buy feature that increases the RTP to 97.63%.


As an industry leader, Microgaming has a variety of popular slot games:

  • 300 Shields Extreme: A highly volatile game with an RTP of 95.29%, featuring a bonus buy option.

Nolimit City

Nolimit City is a well-regarded software provider. One of their popular slot games is:

  • San Quentin: A high volatility game with a 96.03% RTP, offering an exciting bonus buy feature.

Hacksaw Gaming

Hacksaw Gaming is an emerging software provider known for its unique slots:

  • Nitropolis: A highly volatile game with an RTP of 96.10% and an engaging bonus buy option.
Online Casino Software Providers

Key Elements of Buy Bonus Slots

In this section, we will discuss key elements that contribute to the appeal of buy bonus slots, such as Volatility and RTP, Multipliers and Modifiers, Scatter Symbols and Expanding Wilds, and Unique Bonus Game Features.

Volatility and RTP

Volatility refers to the frequency and magnitude of payouts in a slot game. High-volatility games may pay less frequently but offer larger rewards, while low-volatility games pay out more frequently but with smaller payouts.

The Return to Player (RTP) refers to the percentage of a player's bet that is returned to them over a long-term period of play. In bonus buy slots, these elements are crucial because they determine your chances of success and potential winnings.

Multipliers and Modifiers

Multipliers are essential features in most bonus buy slots, as they allow players to increase their winnings exponentially, thus creating the possibility of significant payouts. The multiplier can be found in symbols, which boost the player's winnings by a given factor. The game's rules determine this factor and can range from 2x to as much as 100x or more in some cases.

Modifiers, conversely, are game elements that change the standard gameplay in some way, either in the base game or during the bonus round. Modifiers can include expanding wilds, sticky symbols, or re-spins, among other features, that add variety and excitement to the game.

Scatter Symbols and Expanding Wilds

Scatter symbols play a significant role in activating bonus rounds and triggering free spins. In most slot games, collecting a certain number of scatters within a single spin initiates the casino bonus feature. In a bonus buy slot, players can pay for instant access to the feature, bypassing the need to land scatter symbols during regular gameplay.

Expanding wilds is another vital element found in many bonus buy slots. These wild symbols can expand to cover an entire reel, increasing the chance of winning combinations. They often appear during the bonus round, adding excitement to the gameplay.

Unique Bonus Game Features

Bonus buy slots often have unique bonus game features, making them more appealing and engaging for players. These features can include mini-games, pick-and-click bonus rounds, or more complex free spin mechanics, such as Train Heist, Old Saloon, and High Noon in popular Wild West-themed slots.

These captivating bonus game features, combined with the option to purchase access to them directly, make bonus buy slots incredibly attractive to players looking to maximize their chances of winning big.

Pros and Cons of Buy Bonus Feature Slots


  • Time-saving: By using the feature buy option, players can gain direct access to the highly anticipated bonus round without waiting for it to be triggered during regular gameplay.
  • Higher RTP: In many cases, the Return to Player (RTP) percentage is increased by activating the buy bonus feature.
  • Ideal for high rollers: Players who enjoy taking greater risks are often attracted to the buy bonus feature, as their higher stakes can result in more significant wins during bonus rounds.


  • Expense: Buying the bonus feature often requires a substantial investment upfront, typically between 50-100 times the initial bet.
  • Addictive nature: The convenience and excitement of instantly accessing bonus rounds can lead to addictive behaviour, causing players to continually buy bonuses instead of playing the regular game to trigger them.

Bonus Buy Games

Some popular examples of slots with buy bonus features include:

  • The Dog House Megaways: This slot game offers two free spin bonuses: Raining Wilds, which awards more free spins, and Sticky Wilds, where wild symbols appear on the reels and remain in place for the duration of the round.
Pros and Cons

Playing Responsibly and Managing Bankroll

Playing online slots with buy bonus rounds can be an exciting and thrilling experience. However, it is essential to practice responsible gambling to prevent gambling addiction and effectively manage your bankroll.

One crucial concept to keep in mind is responsible gambling. You should always set a budget for your gaming session, ensuring you only spend what you can afford. By establishing a limit on your gambling funds, you will avoid financial troubles and maintain control over your gameplay. Remember, online slots are meant to be a form of entertainment, not a solution to financial problems.

When it comes to managing your bankroll, consider following these steps:

  1. Determine your budget: Before playing, know how much money you are willing to invest in slots. This amount should be separate from your everyday expenses and savings.
  2. Choose appropriate betting options: Select slots with maximum bets that fit within your established budget. Doing this can extend your gameplay and increase your chances of winning.
  3. Please stick to your limit: It's essential to remain disciplined and not exceed your predetermined budget. If you are inclined to chase losses, take a break and revisit your budgeting strategy.
  4. Slow down your gameplay: Avoid using autoplay too frequently and take your time spinning the reels. This approach will help you have better control over your bankroll and increase your enjoyment of the game.
  5. Save a portion of your winnings: In case of a big win, set aside a percentage of your earnings for future gaming sessions or other life goals.

By following these strategies, you can maintain a healthy relationship with online slots while keeping your bankroll in check. Gambling should always be fun, and playing responsibly is key to achieving a satisfying and sustainable gaming experience.


Online slots with buy bonus rounds offer a unique gaming experience, catering to players looking to maximize their potential winnings and bypass the base game to enter the bonus rounds directly. These buy bonus round slots can be both progressive and non-progressive, with some featuring significant jackpots.

These games appeal to high rollers and casual players alike, as they provide immediate access to the most coveted bonus features. Paying a premium, usually around 100x your stake, unlocks the bonus round, where the maximum possible win is often significantly higher than in the base game.

However, it's important to remember that online gambling has risks; buying bonus rounds can be addictive and may lead to higher bets as players chase the increased payoffs. Practicing responsible gambling and adhering to applicable regulations is vital, particularly in countries like the United States.

The probability of winning in buy bonus slots may vary, with some games offering better odds than others. Some slots allow for bet multipliers, such as an x80 multiplier, increasing the potential return for the player.

In summary, online slots with buy bonus rounds offer a distinctive way to enjoy online gambling, with the possibility of substantial wins and immediate access to the most exciting features. Players must always remember to gamble responsibly and know the risks involved.




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