• Nitropolis 3 introduces creative gameplay mechanics with unique features, offering an engaging and novel experience.
  • The Free Spins bonus round with increasing multipliers can result in significant rewards, creating excitement during gameplay.
  • The game is designed for mobile play, allowing players to enjoy it on smartphones and tablets.
  • Nitropolis 3 may be overwhelming for beginners due to its multiple features and complex gameplay.

Nitropolis 3 Bonus Buy

Nitropolis 3 made its debut in the gambling market on April 04, 2022, marking the third installment in ELK Studios’ dystopian series. With its Avalanche mechanics, expanding playing field, Nitro Reels, and various other features, this game offers ample opportunities for substantial payouts. Notably, its maximum win potential exceeds that of its predecessors by fivefold, making it a compelling choice for high-risk players seeking big rewards.

One of the standout features of Nitropolis 3 is the bonus buy option, which adds an extra layer of thrill to the gameplay. This feature allows players to instantly access the game’s extra rounds or free spins without waiting for them to trigger naturally. It introduces the potential for more substantial wins through enhanced features like multipliers and additional wild symbols. Players have the flexibility to tailor their experience by selecting the bonus buy option that aligns with their betting preferences and budget.

Nitropolis 3 base game
Nitropolis 3 base game

Review of Nitropolis 3 Slot from ELK Studios

The slot initially features a grid consisting of 6 reels and 4 rows, providing players with 4,096 ways to secure winning combinations. To achieve a win, players must land 3 or more matching symbols on consecutive reels, commencing from the leftmost reel, which is reel 1. While symbols can appear in any position on the reels, they must be aligned across successive reels. However, by activating the win “Both ways” feature, you can also form winning combinations when the symbols start from the far right.

Players can select their preferred stake from a range that spans from $/€/£0.20 to $/€/£50 per spin. To access the full spectrum of available betting options, you can simply click on the “Coins” icon located at the bottom of the screen. For those seeking a faster-paced gaming experience, the “Settings” tab allows you to enable Quick Play. Additionally, an Auto Spin feature is also at your disposal.This can result in highly lucrative wins, with the maximum payout remaining consistent at 50,000 times the initial bet.

📅 Release DateApril 2022
🎰 Game TypeVideo Slot
🎨 DesignFuturistic, Animals, Apocalypse, Nitro Gaz, Gangs
📊 Reels6
🔄 Rows4
🔢 Paylines4096
💶 Min Bet$/€/£0.20
💸 Max Bet$/€/£50
🎁 FeaturesBonus Buy, Extra Reels, Symbol Upgrade, Win Both Ways, Nitro Reels
📈 RTP95.0%
🎖 VolatilityHigh
🎉 Max Win50,000x
📱 MobileCompatible
🎮 Game ProviderELK Studios

Theme, Graphics and Sound

Embracing a dystopian narrative, the entertainment is the third installment in its series, succeeding Nitropolis and Nitropolis 2. The storyline revolves around the Nitro gangs, who found themselves overwhelmed by Sergeant Nitro Wolf’s forces and were forced to make a daring escape from the city of Nitropolis aboard their airship. Seeking refuge in a new locale, they have now settled on a tropical beach, not too far from the city they once ruled.

This beachside setting features palm trees, a comfortable deck chair, a thatched beach parasol, a lifeguard hut, and scattered toxic waste barrels. The game’s soundtrack complements the narrative with an upbeat and more cheerful ambiance, a departure from the somber tone of the earlier slots.

Nitropolis 3 RTP (Return to Player)

As with many recent ELK Studios slots, the slot features an RTP of 95%. While this falls slightly below the online slots average of 96%, it aligns with a growing trend that has emerged since 2021. Players should keep this RTP percentage in mind when exploring the activity’s potential rewards.


The entertainment boasts a medium to high volatility rating, scoring a 7 out of 10 on the volatility scale. This means that while wins may not occur as frequently, they tend to be more substantial when they do. On average, players can expect a winning combination to land approximately every 5.2 spins. The game’s hit frequency rate stands at 19.2%, reflecting the balance between the thrill of high-risk gaming process and the potential for rewarding payouts.

Nitropolis 3 X-iter mode with Bonus Buy features
Nitropolis 3 X-iter mode with Bonus Buy features

Nitropolis 3 Max Win

As depicted above, the slot boasts a plethora of exhilarating bonus features, and we are delighted to confirm that they have the potential to yield remarkable winnings. In fact, the maximum win achievable in this slot is a staggering 50,000 times your initial bet – an awe-inspiring achievement that surpasses all previous records set by ELK Studios. This monumental prize represents an extraordinary opportunity for players to secure substantial rewards.

Nitropolis 3 Bonus Buy Feature: X-iter Mode

Within the Nitropolis 3, players can engage with the innovative X-iter mode, offering the opportunity to access 5 distinct game options. These options are available for purchase, with costs ranging from 2x to 500x your total stake. Here’s a breakdown of the available modes and their respective descriptions:

  1. Boosted Bonus Chance: Grants 1 spin with significantly higher chances of triggering the free spins feature at the cost of 2x your stake.
  2. Big Nitro Reel: Provides 1 spin with the assurance of a substantial Nitro Reel at the cost of 10x your stake.
  3. Nitro Match: Offers 1 spin that guarantees a Nitro Match with both-ways pays at the cost of 25x your stake.
  4. Bonus: Grants entry to the standard free spins feature at the cost of 100x your stake.
  5. Super Bonus: Provides access to the super free spins feature, offering enhanced rewards and excitement at the cost of 500x your stake.

The X-iter mode adds an exciting layer of gameplay, allowing players to tailor their experience and potentially accelerate their journey towards free play rounds and substantial winnings.

Steps to Activating the Bonus Buy in X-iter mode

Unlocking the Bonus Buy options in X-iter mode in the entertainment is a straightforward process. Follow these simple steps to access your preferred game mode and embark on an exhilarating gaming adventure:

  1. Launch the Game: Begin by launching the slot and familiarize yourself with its base gameplay.
  2. Access X-iter Mode: Look for the X-iter mode, usually located at the left side on the game interface. It may be represented by an icon or a button clearly marked as “X-iter”.
  3. Choose Your Mode: Click on the X-iter mode to reveal the available Bonus buy options. You’ll typically find a list of modes along with their respective costs and descriptions.
  4. Select Your Preferred Option: Carefully review the available modes and their associated costs. Choose the extra purchase mode that aligns with your gaming strategy and preferences.
  5. Confirm and Play: After selecting your desired mode, confirm your choice by following the on-screen prompts or instructions. Ensure you have the necessary funds to cover the cost of the chosen mode.
  6. Enjoy the Action: Once your purchase is confirmed, the game will transition into the selected buying mode, providing you with a unique and exciting gaming experience.
Nitropolis 3 Bonus round start
Nitropolis 3 Bonus round start

How to Achieve Success with the Buy Bonus Feature

Unlocking the Buy Bonus Feature in Nitropolis 3 can be an enticing prospect for players seeking an expedited path to free play rounds and potentially significant wins. To maximize your success and make the most of this feature, consider the following strategies and tips:

  1. Bankroll Management: Before stepping into the feature, ensure that you have a well-defined budget for your gaming. Set limits on the amount you’re willing to spend on extra buys to avoid overspending.
  2. Mode Selection: Carefully evaluate the available bonus buy modes and their associated costs. Consider your playing style and risk tolerance when choosing a mode. Lower-cost options may offer more frequent extra round access, while higher-cost modes can yield greater rewards.
  3. Game Knowledge: Familiarize yourself with the base game of Nitropolis 3, as well as the specific features and mechanics of each bonus buy mode. Understanding how the one works can help you make informed decisions when selecting a mode.
  4. Balanced Approach: Experiment with different buying modes and strike a balance between risk and reward. While high-cost modes can lead to substantial payouts, lower-cost options may provide more consistent access to extra rounds.
  5. Set Win and Loss Limits: Establish both win and loss limits to maintain control over your gaming session. If you achieve a predetermined win target, consider taking a break or cashing out your winnings.
  6. Responsible Gaming: Always prioritize responsible gaming practices. Be aware of the potential costs associated with bonus buys and play within your means. If you’re not experiencing the desired results, it’s advisable to reevaluate your approach or take a break from purchase options.
  7. Enjoy the Experience: While the feature offers exciting opportunities, remember that gaming should be an enjoyable pastime. Embrace the thrill of the game and savor the moments of anticipation and excitement.

Symbols and Cafhout

The lower-paying symbols include J, Q, K, and A. Landing 6 identical symbols of this type rewards you with a payout of 0.3x your bet. Moving up the value ladder, the game features medium-paying symbols representing emblems from various gangs, such as the Rogue Rats, Pug Thugs, Gritty Kitty, and Dirty Dawgs. Achieving a combination of 6 identical symbols from these gangs yields payouts ranging from 0.8x to 1x your bet.

At the top of the hierarchy, you’ll find the highest-paying symbols depicting the gang leaders – a rat, a pug, a cat, and a dog. Matching 6 symbols of the same leader type results in generous rewards ranging from 2x to 5x your bet. Additionally, the game introduces a scatter symbol in the form of a zeppelin, along with Nitro reels enclosed within a green frame. Also you’ll encounter a toxic sign and a cocktail wild symbol within the one. The cocktail wild has the ability to substitute for all symbols, with the exception of the Bonus, Super Bonus, Both Ways, Redrop, and Nitro feature symbols.

About Other Nitropolis 3 Slot Features

Alongside the Bonus Buy features available in the X-iter mode, Nitropolis 3 boasts a range of exciting features such as the Wild Symbol, Nitro Reels, Winning Respin, Nitro Booster, and the Free Spins Bonus Game.

Wild Symbol

The wild symbol plays a crucial role in forming winning combinations by substituting for all symbols except the scatter, super scatter, Redrop, Both Ways, or Nitro feature symbols. If a wild symbol lands within a feature frame and contributes to a win, it transforms into a Nitro feature symbol.


Activated when no win occurs, the Redrop feature retains all Nitro feature symbols and scatter symbols on the reels while other positions respin, providing another chance for a win.

Nitropolis 3 Super bonus round
Nitropolis 3 Super bonus round

Both Ways

The Both Ways symbol enables winning combinations to form from both the leftmost and rightmost reels, enhancing the potential for wins. This feature remains active throughout the entire avalanche feature.


Whenever a winning combination is achieved, the Avalanche feature triggers, causing the winning symbols to vanish from the reels. New symbols then cascade down to fill the empty positions, and an additional row is added, expanding the grid to accommodate up to 8 rows. If Nitro reels are part of a winning sequence, they will respin, continuing as long as winning combinations are created.

Big Symbols

During gameplay, symbols can appear in various sizes, including 1X1, 2X2, 3X3, or 4X4. For instance, a 3X3 symbol is equivalent to nine regular symbols. Low, medium, high, and wild symbols can all appear as big symbols, providing ample opportunities for larger wins.

Nitropolis 3 Both Waye feature
Nitropolis 3 Both Waye feature

Nitro Reels

Nitro Reels are an integral part of the game and come in two sizes: small and big. Small Nitro Reels occupy 2 symbol positions and may randomly contain 4, 6, 8, 10, or 12 identical symbols, with each symbol counting as 1X1. Large Nitro Reels encompass 2, 3, 4, 5, or 6 identical symbols, each equivalent to 2X2 regular symbols.

Small Nitro Reels may also contain super scatter symbols, always counting as a single 1X1 symbol, regardless of their quantity on the reel. The number of ways to win reverts to the previous amount once the super scatter symbol completes its spin. Whenever Nitro Reels contribute to a win, they trigger a respin during the ensuing avalanche, enhancing the potential for more significant rewards.

Nitro Features

Nitropolis 3 introduces three distinct Nitro features that can trigger during the activity, activating once all symbols have landed but before the payout is awarded. After executing a Nitro feature, it has the potential to randomly transform into a wild symbol. If this wild symbol contributes to a win, it will then revert back to a Nitro feature. The three Nitro features are:

  • Nitro Match: The Nitro Match symbol, when landed, results in all Nitro Reels on the same and adjacent reels matching with an adjacent paying symbol.
  • Nitro Upgrade: When the Nitro Upgrade symbol is landed, it causes the Nitro Reels on the same and adjacent reels to upgrade, adding extra symbols to the Nitro Reels.
  • Nitro Wild: Upon landing the Nitro Wild symbol, all symbols within the Nitro Reels on the same and adjacent reels will be substituted with wild symbols.

Free Spins Bonus Game

The Bonus Game in the entertainment is triggered when you land 3 or more scatter symbols on the reels. Depending on the number of scatter symbols you land: 3, 4, 5, or 6, you will be rewarded with 8, 12, 16, or 20 free spins, respectively. During this thrilling extra round, it is possible to retrigger additional free spins. What’s more, all Nitro Reels that appear during the free activity will remain sticky for the duration of the remaining spins.

Furthermore, the bonus game introduces a safety level mechanism, wherein each winning spin increases the number of rows by 1, with a maximum potential of reaching 8 rows. Importantly, these rows do not reset between spins. In the event that you activate the extra game with a combination of scatter and super scatter symbols, you gain access to the super bonus game. In this case the win “both ways” feature remains active throughout, and you start with 8 rows to enhance your winning potential.

Nitropolis 3 Free spins round
Nitropolis 3 Free spins round

Nitropolis 3 Free Play the Bonus Buy Demo

Playing the slot in Demo Mode with the Bonus Buy feature offers several advantages. Firstly, it allows you to experience the thrilling extra rounds and special features without risking real money. This is particularly valuable for newcomers who want to familiarize themselves with the game’s mechanics and understand how the buying feature works.

Secondly, by testing the Bonus Buy option in Demo Mode, you can determine whether it aligns with your gaming preferences. It enables you to assess the potential risks and rewards associated with purchasing extras before committing actual funds.

Lastly, exploring the Nitropolis 3 slot’s Demo Bonus Buy feature provides a risk-free way to devise and fine-tune your gaming strategies. This knowledge can be invaluable when you decide to play with real money, giving you a competitive edge in maximizing your winnings.

Where Find the Nitropolis 3 Slot Demo Bonus Buy

If you’re eager to explore the Nitropolis 3 slot Demo Bonus Buy feature, you’re in the right place. Here’s a step-by-step guide that will lead you to this thrilling gaming experience:

  1. Visit Trusted Online Casinos: Begin your journey by visiting well-established online casinos that offer the slot in demo mode. It’s essential to choose a reputable and licensed casino to ensure a secure and fair gaming environment. Be on the lookout for casinos known for their reliability.
  2. Browse Slot Games: Once you’ve landed on the casino’s website, navigate to the slots section. You can utilize the search function to quickly locate the slot title. Reputable casinos often have a wide selection of slots, and you’re sure to find this exciting title among them.
  3. Activate Demo Mode: Click on the entertainment of your choice, and look for the option to play in demo or free mode. This option allows you to immerse yourself in the game without the need for real money deposits. It’s an excellent way to get a feel for one’s mechanics and bonus features.
  4. Experience the Bonus Buy Feature: Within the demo mode, you’ll discover the opportunity to try out the feature. It’s a convenient and risk-free way to purchase bonuses and enjoy the enhanced features the slot has to offer. Follow the provided instructions and prompts to dive into the excitement without spending actual funds.

For additional insights, game overviews, and access to the Nitropolis 3 slot’s Demo Bonus Buy feature, consider exploring reputable casino review websites and the official website of the game’s provider. These sources often provide valuable information and direct links to the entertainment, ensuring you have a comprehensive gaming experience.

Nitropolis 3 Super win
Nitropolis 3 Super win

Nitropolis 3: Mobile-Friendly and Application

ELK Studios, known for its mobile-first approach, has developed Nitropolis 3 using HTML5 technology. This ensures that the game is seamlessly accessible on various mobile devices, including those running iOS, Android, and Windows operating systems. Additionally, the activity is compatible with tablets, laptops, PCs, and MAC devices, offering players the flexibility to enjoy it on their preferred platform.

With the slot boasting up to 1 million ways to win, it’s worth noting that a larger screen, such as that of a tablet or PC, can enhance the gaming experience. Importantly, players can access the entertainment directly from their web browsers, eliminating the need to download a separate application for a hassle-free and convenient gaming experience


In the world of online slots, Nitropolis 3 stands out as a thrilling and innovative addition. With its captivating dystopian theme, expansive playing field, and unique Nitro features, it offers an exciting gaming experience. What truly sets it apart is the Bonus Buy feature, which allows players to access extra rounds and free spins instantly, adding an extra layer of excitement. The ability to test this feature in Demo mode provides a risk-free opportunity for players to explore its potential. While the slot’s RTP and volatility may vary, the possibility of substantial wins makes Nitropolis 3 an enticing choice for both seasoned players and newcomers.


Is there a Bonus Buy feature in Nitropolis 3?

Yes, the slot offers a Bonus Buy feature, allowing players to access bonus rounds and free spins instantly.

Can I try the Bonus Buy feature in Demo mode?

Yes, you can test the Bonus Buy feature in Demo mode to explore its functionality without using real money.

How do I trigger the Bonus Buy feature in Demo mode?

To access the Bonus Buy feature in Demo mode, visit a reputable online casino offering the slot in free play. Locate the game, activate Demo mode, and follow the provided instructions to purchase bonuses.

Can I play Nitropolis 3 on mobile devices?

Yes, Nitropolis 3 is compatible with iOS, Android, and Windows mobile devices, allowing you to enjoy the game on smartphones and tablets.

Jim Buffer
AuthorJim Buffer

Jim Buffer is a highly knowledgeable and accomplished author specializing in articles and reviews of casino games, with a particular expertise in gambling and crash games. With years of experience in the industry, Jim has established himself as a trusted authority, providing valuable insights and analysis to the gaming community.

As a specialist in gambling and crash games, Jim possesses a deep understanding of the mechanics, strategies, and dynamics of these games. His articles and reviews offer a comprehensive and informed perspective, guiding readers through the intricacies of different casino games and providing valuable tips to enhance their gameplay experience.