Bonanza Megaways Slot Review (Big Time Gaming)

RTP: 96%

Provider: Big Time Gaming (BTG)

Best casinos: All British Casino, Kwiff Casino, Casushi, Monopoly Casino, Spin and Win

Bonanza Magaways Key Features

RTP: 96%

Provider: Big Time Gaming (BTG)

Volatility: High

Theme: Mining

Reel style: 6x7 Megawys

Paylines: 117649

Stakes: £0.20 - £20

Max Win:


Free Spins




The Bonanza slot is one of the earliest Megaways slots created by Big Time Gaming. So, partially due to this mining-themed slot, the Megaways mechanic developed by the same provider became popular globally.

Thanks to its story, this game will take you to a rich mine loaded with gold and gemstones. Everything is portrayed attractively with the help of sophisticated graphics and fast-paced music.

This is another release with Megaways mechanic featuring up to 117.649 ways to win and 6 reels with 2 to 7 positions. Regarding theoretical RTP, it’s a slot with a Return to Player of 96%. Don’t forget that you have a chance to try a high-volatility game.

Fortunate users can activate extras like free spins, win multipliers, and reactions. If you like the summary, we invite you to read our Bonanza slot review to learn the details. OLBG features a list of the best online slots ranked and reviewed by experienced slot players.

Casinos that offer Bonanza Magaways slot sorted by RTP

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Game Data

Put yourself in the boots of a seasoned miner and start digging for gold and gems. The Bonanza slot is part of the Megaways series and features refined visuals like shiny icons and upbeat sounds.

The free spins round is the main bonus of this game, but you can also benefit from other extras, including reactions.

Even though it was released in 2016, this release is unique and still one of the most popular in the thriving casino industry. This makes sense because, besides the special features, you can use options in modern slots like multiple betting options, an accelerated mode, an autoplay feature, etc.

More about this game in our detailed Bonanza online slot review.

 Slot Review Key Features
Studio Big time Gaming (BTG)
Theme  Mining
RTP % 96%
Volatility High
Reel Style Megaways 6x7
Paylines 117,649
Stake Range £0.20 - £20
Max Win 10,000
Special Symbols Wild Symbol, Scatter Symbol
Features Reactions, Free Spins with Unlimited Win Multiplier
Jackpot None

Graphics, Music, and Sound Effects

If you didn't know the Bonanza slot game was released in 2016, you'd would’ve thought it was a brand-new title. One of the reasons for that is the impressive imagery found on the main screen.

This online slot has many memorable visual elements, like reels made of rocks and carts moving above the matrix. There are also beautiful icons in striking colors. Of course, the most exciting thing is the background image featuring the miner’s wooden cabin, the entrance to the mine, and many flowers and rocks.

The fantastic animations make the game livelier, like the accelerated country (banjo) music played whenever you launch a round in this release. On top of that, we have cracking, shattering, and exploding sound effects.

Bonanza Magaways Expert Review

Theme & Symbols
Bonus Features
Max Win ()
Sounds & Music
RTP (96%)

Key Features

For a better understanding of what a slot game offers, it’s best to focus on its key game features. That’s what OLBG experts do in all their slot game reviews. It goes without saying that the Bonanza slot review is the same.

Thanks to the review we are about to unroll, you can learn its mechanic, the various features it possesses, and more.

We will cover the theme, talk about its RTP, paylines, and reels, reveal the features, check the maximum win, and other things. In the end, you will learn everything valuable about the Bonanza slot.

Theme – Mining

Officially, the theme of the Bonanza slot is gold mining. However, once you start playing the game, you will notice other valuable items here – gemstones.

This online slot game is about mining precious stones and metals, probably during the California Gold Rush. You will see a beautiful mountain and a mine at its base. While it’s true that you can’t see the miner, all things suggest that there’s at least one man like that involved in the story.

The first six basic symbols on the paytable are unrelated to the theme (playing cards). Still, the other four are and include four gemstones in specific colors and forms. Players will also find stacked dynamite sticks and gold signs in the role of special symbols.


The Megaways mechanic implemented in the Bonanza slot requires a specific number of reels – 6. In addition to the six reels, this release features 2 to 7 rows/positions per reel. There’s an additional row above the middle four reels that adds symbols.


Although you can play slots from the Megaways series with a different number of winning ways, most titles, including the Bonanza slot, feature up to 117,649 ways to win. This figure keeps changing with every spin. Regardless of the number of winning ways, landing winning patterns requires three to six matching standard symbols of the same kind on adjacent reels (except for the top-paying one, which requires just two or more).


Now that you know the layout’s appearance and the number of winning ways, it’s time to reveal something that has an even more significant impact on your gaming sessions – the slot’s RTP. The theoretical Return to Player percentage of the Bonanza slot is 96%. Compared to many other titles, it’s a high RTP.

Still, this percentage is not cast in stone, and online casinos often alter these figures according to their current policies. To spare you the trouble, we shared a list of UK casinos where you can play this game and the respective RTPs found there.

For an even more informed decision, we advise you to check our reviews and read about the casino's welcome bonuses and deals, game libraries, customer care, payment options, and other things available in each casino.

Casino RTP% Review
All British Casino 96 Read Now
Kwiff 96
Read Now
Casushi 96
Read Now
Monopoly Casino 96
Read Now
Spin & Win 96
Read Now

Several top-ranking operators have the Bonanza slot in their offer, and many of them include a solid RTP for this title. Those who want to try other releases in well-established casinos should check the list of slot sites we recommend.

Stake Range

Before the time for playing comes, you should learn about the stake range that the Bonanza slot has. Generally, this is not the ideal option for high rollers because it doesn’t have a high limit. More precisely, you can bet between £0.2 and £20 per spin. A stake section on the right enables you to change the values quickly.

Max Win

Logically for a game with a relatively low big bet limit, the Bonanza online slot limits the maximum win at 10,000x the player’s bet.


The reactions accompanied by explosions and symbol removal are present whenever you hit a winning pattern. Namely, the contributing icons are eliminated and replaced by new icons failing from above and from the right in the carts above the matrix.

With this feature, players can win unlimited times as long as they get new winning combos.

Free Spins

After a few spins in the Bonanza slot game, you will probably notice the G, O, L, and D plates made of gold. These are Scatter icons that can appear anywhere on the grid. Users with four GOLD Scatters on the matrix will activate a round of 12 free spins. The number of starting Scatters can be higher, and every next one after the fourth provides five more free spins.

The exciting part about this round is the unlimited win multiplier. When the free spins begin, you get a 1x multiplier for the wins; its value will increase by one after every reaction. So, players can expect substantial wins on a winning streak.

During this round, landing three or four Scatters will provide 5 or 10 additional free spins, respectively. In this case, the letters can appear only in the carts. Whether you play in the base game or during free spins, the image of stacked dynamite sticks is a Wild icon that substitutes standard symbols.


The Bonanza online slot game misses a direct jackpot prize, and there are no fixed or progressive jackpots here. Of course, you can still win up to 10,000x the stake, which is a significant amount even if you play with a minimum bet.

OLBG includes a page where you can find the best jackpot slot games if you are genuinely interested in such titles.

100 Spin Test

100 spins is not a Real Test

We give every slot a 100 spin test to see just what it can do, or not as the case can often be - 100 spins is no reflection of the likelihood of any other 100-spin session, as RTP's are set over many millions and probably billions of spins. So this 100 spin test is just for entertainment and insight purposes

Element Outcome
Session RTP 67.1%
Win Frequency Medium
Biggest Base Game Win 17.9x
Spins to Bonus n/a
Bonus Paid n/a
Time Taken for 100 Spins 9:13

Expert Verdict

From Big Time Gaming comes the Bonanza online slot, part of the world-renowned Megaways series. This entertaining release has an evergreen theme about gold and gem mining.

Most players should be satisfied with the audiovisual elements of this title, including its thrilling animations, vividly-colored icons, and upbeat country music.

Like many Megaways titles, this one has 6 reels and offers up to 117,649 ways in a single spin. The number of rows varies and goes between 2 and 7 per reel. The two main features here are the free spins and the reactions. The good thing is that there are increasing win multipliers for the reactions during free spins.

The Bonanza slot has a solid theoretical RTP of 96%. Unfortunately, I was left with an RTP of 67.1% after the first 100 spins I played. On the other hand, the frequency of wins was excellent, which is even better than the declared high volatility of this game.

As a game that contributed to the popularity of the Megaways concept, we recommend the Bonanza slot to all players looking for fast-paced, action-packed slots.

Editorial Information

This Bonanza slot review from Big Time Gaming was written by the OLBG Slots Content Team, beginning with Andrej Trajkovski, who has worked in the online gambling industry since 2013, playing and reviewing online slots and casinos daily for the past four years. The review is Fact Checked by William Westerlund, an online casino expert reviewing casinos and slots for over five years, and published by Steve Madgwick, our Editor-In-Chief with over 18 years of experience creating and managing high-quality sports betting and Casino content for OLBG & multiple other publications.


Bonanza Slot FAQs

  • Is there a Bonanza mobile slot?

    The Bonanza slot is based on the HTML5 platform making it playable on desktop and mobile devices. For the best experience, the provider suggests updating the operating system of your smartphone or tablet.

  • When was the Bonanza slot released?

    7 December 2016 is when the Bonanza slot by Big Time Gaming hit the global market. Of course, it also became available to UK players on that day.

  • What is the Bonanza RTP?

    You should expect an RTP of 96% in the Bonanza online slot, which is decent not just for Megaways slots but also in general.

  • Does Bonanza have a lot of in-game bonus features?

    The Bonanza online slot has two features (Reactions and Free Spins). Still, they include extras that make the gameplay more fun.

  • What is the Bonanza max win?

     A single round in the Bonanza slot can provide up to 10,000 times your total stake.

  • Who created the Bonanza online slot?

    Big Time Gaming is the company behind the Bonanza online slot. This is one of their first and most successful products of the branded Megaways series.  

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