Big Bass Bonanza Slot Review

RTP: 96.71%

Provider: Pragmatic Play

Best casinos: TheVic, HeySpin, LeoVegas Casino

Big Bass Bonanza Key Features

RTP: 96.71%

Provider: Pragmatic Play

Volatility: Medium

Theme: Fishing

Reel style: 5x3

Paylines: 10

Stakes: £0.10-£250

Max Win: 2100x


Free Spins



Big bass Bonanza was the first of a swathe of online slot games to work on the theme of Fishin' Frenzy, taking the basic premise, board, and fishing theme and in all fairness making a better version with an extended free spins feature.

Upon release it quickly because one of most popular slot machines from Pragmatic Play - Reel Kingdom and was soon available on many UK slot sites and online casinos.

Casinos that offer Big Bass Bonanza slot sorted by RTP

100% up to £200 + 100 FREE Spins

  • Wagering req. 50x
  • Value/free spin £0.10
  • Offer amount £200, T&Cs apply. New reg only. Opt in & deposit £10, £50 or £100 within 14 days & further 7 days to wager cash stakes 50x to unlock reward (up to £200 on first deposit). Wagering/game contributions vary. Up to 100 free spins x10p added to Big Bass Splash after depositing & wagering, 3 day expiry
#ad. 18+,, T&Cs Apply

Up to £200 Bonus + 100 Free Spins

  • Wagering req. 35x
  • Value/free spin £0.10
  • Offer amount £210
Welcome bonus package on first 3 deposits 1st Dep. Min £20. 50x wagering (bonus & deposit). max bonus to cash 5x. 20 Free spins. 35x wagering. Max bonus to cash £30. Claim once. See full T&Cs for 2nd & 3rd Deposit offers. Full T&C's apply.
#ad. 18+,, T&Cs Apply

100% Bonus Up to £50 + 100 Spins

  • Wagering req. 35x
  • Value/free spin £0.10
  • Offer amount £60
18+. New Players Only. Min. deposit £20. Max bonus allowed is £50. Offer duration upon receiving is valid for 2 weeks (14 days). Max Win from spins is £100. 35x wagering applies both for bonus and spins part. Spins are credited on specific games(Starburst). Spins expire after 24 hours if unused. Full T&Cs Apply.
#ad. 18+,, T&Cs Apply

Often follow-up Variation on a theme slots can disappoint but this was not the case with the Big bass series which has since grown to other versions too. With a Unique feature board and achievable free spin retrigger with increasing multiplier, it is easy to see why the popularity of the Big Bass series grows and continues to maintain in the most popular promoted slots each month.

Big Bass Bonanza Review Key Features
StudioPragmatic Play / Reel Kingdom
Theme Fishing
RTP %90.63 - 96.71%
Stake Range£0.10 - £250
Max Win2100x
Special SymbolsScatters
FeaturesFree Spins, Retriggers
JackpotNo Direct Jackpot

Big Bass Bonanza Expert Review

Theme & Symbols
Bonus Features
Max Win (2100x)
Sounds & Music
RTP (96.71%)

Key Game Features

The features of a slot game are what make it the most appealing for players. We want to be entertained and also get a window into the potential for a game to pop-off, so let's take a look at what Big Bass Bonanza has in store for us.

Theme - Fishing

Fishing is the theme and as the name suggests specifically Bass, the bigger the better. The lower value symbols are the Typical, 10, J, Q, K, and A, and the higher value premium symbols, are a tackle box, float, Dragon Fly and Fishing Rod, none of which land very often in quantities.

Finally, there are the bass fish symbols, which vary in size and have various values attached, which do not come into play in the base game, but make all the difference in the free spins feature


Typically 5 reels play three rows, and for the higher premium value symbols, wins can be achieved by lining up just a pair. Don't expect it often though.


On the simple side, Big bass Bonanza has ten pay lines in the base game, and the same applies in the bonus round.

2 of a kind of the higher premium symbols will pay, although as is standard, you'll need three in a row to win in most cases. Full lines seem to be rare but tend to be more likely with the fish themselves and pay well


The RTP is dependent on the casino, not many people realise that you may be getting a lower RTP on the same game depending on which casino you are playing.

I was quite stunned in the variance of the RTP on this game between casinos, with the best offering 96.71% at All British Casino against the worst down at around 90.5%, a full 6% lower. In the great scheme of things it means little for general short gameplay, but 100% you are getting worse value playing at the casinos with the lower RTP, and this will tend to go for many games. 

CasinoBig Bass Bonanza RTP%Read Review
All British Casino96.71Play Now
Slotnite95.67Play Now
Dream Vegas95.67Play Now
Casushi95.67Play Now
Mr Mega90.63Read Review
Duelz Casino90.63Read Review
Play Frank90.63Read Review

Stake Range

Stake options range from as low as £0.10 through to a ridiculous £250 per spin

Max Win

The calculated maximum multiplier of the game is 2100x - This is a value that has been seen to land plenty of times so is not 'as theoretical' as some slots with huge multipliers that are rarely seen landing.

At any point in the free spins game should the 2100x be achieved the game round will end as the maximum win has been reached

Max Win of 2100x

Not the biggest max win to be found on any slot game but at least it is one that is achievable with plenty of video evidence available should you wish to search it out.

Scatter/Free Spins

There is only a single feature with this game and that is to land the three scatter symbols to trigger the free spins round.

You are awarded 10 free spins. The aim is to land the fisherman who will in turn capture the values of any fish that land at the same time, whilst adding to the fisherman meter at the top of the screen.

The more scatters landed the more initial free spins you are awarded.

  • 3 Scatters - 10 Free Spins
  • 4 Scatters - 12 Free Spins
  • 5 Scatters - 15 Free Spins

If you can collect 4 fishermen in the ten spins, then you will be awarded a further 10 free spins with subsequently caught fish awarded at 2x.

This repeats for a 3x bonus and a huge 10x bonus, something expectedly more rarely seen.


There is no direct jackpot associated with this game unless part of a daily drop or progressive group promotion at certain casinos.

Play Experience & First Impressions

Anyone who has played Fishin Frenzy will be aware of the volatility of that game where the scatter bonus can take forever to land, and then on another occasion will drop a couple of times in quick succession.

You can expect the same from Big Bass Bonanza but this time, you get sharper and more welcoming graphics and a better soundtrack [perhaps ukelele], and sound effects.

Big bass Bonanza is a highly volatile game meaning that getting a scatter bonus is no guarantee of a big win. In fact it will often be disappointing and frustrating, but by the same token, it also offers the opportunity of landing a big win quickly. It is swings and round-a-bouts

A more modern, fresher theme based on Fishin Frenzy which is fun to play as long as you enter with the knowledge this is a high volatility slot game and losing runs can be quick and lengthy.

Steve Madgwick - Online Slots Expert -

100 Spin Real-Time Test

Now, 100 spins is not nearly a big enough sample to provide a complete picture of any slot, RTP' are set on theoretical billions of spins, so features, wins and aspects of games may come thick and fast or not at all in such a small sample, but we have decided to give every slot review on site the same 100 spin test just to see what happens.

Session RTP10%
Win FrequencyMedium
Biggest Base Game Win10x
Spins to Bonus93
Bonus Paid27x
Time Taken for 100 Spins12:15

Big Bass Bonanza 100 Spin Test

The Scatter bonus landed after 93 spins, returning a 27x return, and the biggest base game win was 10x - Overall the 100 spins only provided a 10% RTP, but this is a very short test but demonstrates what you should be prepared for.

Overall View

I defiantly got a cold 100 spins for my test but was pleased to see the bonus land after 93 of the 100 spin test. I could not progress for a retrigger and it paid 27x which in itself is not bad but nothing like the max 2100x possibility

Expert Verdict

An entertaining slot in a modern format with a unique and exciting free spins round which provides excitement of the potential, although rarely delivers.

Steve Madgwick - Online Slots Expert -

I like the Big bass Bonanza version of this game very much, I find it an enjoyable play so long as preparing for coin-eating runs of nothing happening.

Expect little from the premium symbols, they rarely land, and bigger base game wins can be expected from fish symbols lining up with the odd consolation prize for the lower values coming in threes.

Pragmatic have created several other versions of this game including a megaways version too.

Editorial Team Information

This Big Bass Bonanza slot review 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.


Big Bass Bonanza Slot FAQ's

  • Is Big Bass Bonanza a Good Slot

    Big Bass Bonanza is a good slot to play for slot fans who like a good number of features, with random bonuses, and regular base game wins. Once the free spins round is awarded, there are retrigger opportunities and a max win of 2100 x available

  • What is the RTP of Big Bass Bonanza?

    The RTP of Big bass Bonanza can range from 96.71% at All British Casino, almost matched by 95.67% at Slotnite and Dream Vegas down to 90.63% at PlayFrank

  • What is the Max Win on Bog Bass Bonanza

    The first iteration of Big bass Bonanza from Pragmatic play offers a theoretical max win of 2100 x stake, and is most often won in the bonus free spins round.

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