Betting Sites
Betting Sites
Guide
Gambling

Big Bass Halloween 2 Slot Review – RTP 96.71% & Random Modifiers

Big Bass Halloween 2 is a great Halloween-themed edition of Pragmatic Play's popular Big Bass / Reel Kingdom online slot series, released in October 2024. UK players love its high volatility, great return-to-player (RTP) average, and terrific free spins features. Whether you’re new to slots or a reel-spinning expert, this review outlines how to play Big Bass Halloween 2, giving you tips and strategies, and explains the RTP, fairness and more.

David Cook
David Cook

Last updated: 2025-10-16

Chad Nagel

5 minutes read

SportsBoom offers honest and impartial UK bookmaker reviews to help you make informed choices. While we may earn commissions through affiliate links, our content remains independent and free from promotional influence. For more information, see our Content Transparency and How We Review pages.

Big Bass Halloween 2 Slot Review

Big Bass Halloween 2 Slot Review

Featured Casinos

High RTP slots
Best Odds
4.3/5
BONUS: Wager £20 & Get 50 Free SpinsGet Bonus
Payout %
96.89%
No. of Games
1498
Detailed Product Info
Full T&Cs apply 18+

18+. New customers only. UK residents only. Register using the promo code “5x50fs“ and make a minimum deposit of £20. Wager at least £20 on selected* Pragmatic Play slot to receive 50 Free Spins per day for 5 consecutive days. The offer is limited to one per household, email address, or IP address. Free Spins will be credited within 24 hours to all players who meet the qualifying criteria. Free Spins can only be used on selected* Pragmatic Play slots with a minimum spin value of £0.1. Full terms and conditions apply

Most Free Spins!
Priced Up
4.6/5
BONUS: Wager £30 & Get 90 Free SpinsGet Bonus
Payout %
97.17%
No. of Games
1087
Detailed Product Info
Full T&Cs apply 18+

18+. New customers only. Wager a minimum of £30 on Pragmatic Play slots and receive 90 free spins on Big Bass Bonanza. Free spins expire after 7 days. Wagering requirement 2x. BeGambleAware.org. T&Cs & Maximum Pay-Outs Apply. #ad

Fast payouts
Swifty Sports
4.1/5
BONUS: Stake £10 & Get 50 Free spinsGet Bonus
Payout %
99.6%
No. of Games
2911
Detailed Product Info
Full T&Cs apply 18+

stake £10 on casino to receive 50 free spins on starburst | valued at £0.20 per spin | with maximum winnings of £100 | valid for 72 hours and to be used in one session on starburst only. Full terms and conditions apply

Reliable slot payouts
Bet Vickers
4.2/5
BONUS: Wager £10 & Get 50 Free SpinsGet Bonus
Payout %
98.45%
No. of Games
1178
Detailed Product Info
Full T&Cs apply 18+

18+. New verified customers only. Deposit and stake £10 on any slot game and get 50 FREE SPINS on Big Bass Christmas Bash. £0.20 spin value. Valid for 48 hours. Max winnings £100. Free spins must be used in one session on Big Bass Christmas Bash only. Terms and Conditions apply.

Monster jackpots
Yeti Casino Logo
4.8/5
BONUS: 23 Big Bass Bonanza Free Spins on RegistrationGet Bonus
Payout %
98.15%
No. of Games
1031
Detailed Product Info
Full T&Cs apply 18+

18+ New UK players only | 23 No Deposit Spins Winnings Have 10x Wagering Requirements | Max Cashout on No Deposit Spins is £100 | Cash Spins Winnings Are Wager-Free | No max cash out on Cash Spins | Eligibility is Restricted for Suspected Abuse | Skrill Deposits Excluded | Spins Values Are £0.10 Per Spin | All Spins Expire in 48 hours |

Easy mobile play
Lucky MateBONUS: Bet £10 & Get 50 Free SpinsGet Bonus
Payout %
97.71%
No. of Games
823
Detailed Product Info
Full T&Cs apply 18+

18+. Play responsibly www.gambleaware.org | Bonus T&Cs apply | User agreement | £10 min deposit | £10 in slot bets grant 50 spins on Big Bass Splash | £5 total spin value (£0.10 per spin) | 7-day expiry | Selected payment methods only. full terms and conditions apply

Pub style fun
Pub CasinoBONUS: Deposit and wager £10 for 50 cash spins (at 20p)Get Bonus
Payout %
96%
No. of Games
2000
Detailed Product Info
Full T&Cs apply 18+

New players only | Deposit & wager at least £10 to get free spins | Free Spins winnings are cash | No max cash out | Eligibility is restricted for suspected abuse | Skrill deposits excluded | Free Spins value £0.20 per spin | Free Spins expire in 48 hours |

Best UK Casinos for Big Bass Halloween 2 Slot

CasinoExclusive Bonus/Offer
Bet UKGet 50 Free Spins on Big Bass Splash when you join and play £10
Monster SportsBet £10 and get a £30 Free Bet
Planet Sport BetDrops & Wins: Grab your share of £2m every month
MidniteWager £20 or more to get 100 Free Spins on Big Bass Splash
Star SportsBet £50 and get a £25 Free Bet
Sportsboom Event Table Logo

Best Choice: Bet UK is way ahead of the field, due to its simple terms and conditions with bonuses, very strong mobile support and great free spins bonuses specifically available for use on the Big Bass series of games. 

What is Big Bass Halloween 2 Slot? 

Big Bass Halloween 2 is a video slot by Pragmatic Play / Reel Kingdom that mixes both fishing themes and Halloween horror. It has 5 reels with 3 rows and 10 fixed paylines. The game features Free Spins, random modifiers, Money Symbols, Fisherman Wilds that collect cash values, and bonus round retriggers. 

There is no progressive jackpot, but the maximum win is very high. RTP is about 96.71%, although different versions exist, and this game is high volatility, so expect big swings. It is fair and trustworthy, as it is licensed by the Gambling Commission in the UK.  

What is Big Bass Halloween 2 Slot.jpg

Big Bass Halloween 2 Slot

Key Features and Technical Specs

Aspect Big Bass Halloween 2 
Game Type Video Slot 
Developer Pragmatic Play / Reel Kingdom
Release Date October 2024
Platforms Desktop / Mobile / Tablet 
RTP 96.71%
Volatility High
Minimum Bet £0.10
Maximum Bet £250
Max Payout Up to 5,000x stake
Hit Frequency c. 13.66%
Free Spins 10-20 Free Spins depending on scatters
Features Wilds / Money symbols / Random modifiers /Bonus Buy
Jackpot Type Fixed  
Licensing Authority Gambling Commission 
Sportsboom Event Table Logo

How to Play Big Bass Haloween 2 Slot

  1. 1

    Select your bet size: Use the “+” / “–” buttons under (or beside) the reels to set your stake. 

    Big Bass Haloween 2 Slot Playing Guide

    Big Bass Haloween 2 Slot Playing Guide

  2. 2

    Understand paylines and symbols: There are 10 fixed paylines. Wins require matching symbols from the leftmost reel across adjacent reels. 

  3. 3

    Spin the reels: Press “Spin” to play one round. 

  4. 4

    Free Spins trigger: Land 3, 4 or 5 Scatter symbols (Jumping Bass / Hooked Bass) anywhere in the base game to get 10, 15 or 20 free spins respectively. 

  5. 5

    Modifiers & Fisherman Wilds: Before free spins, 0-5 random modifiers may apply.

  6. 6

    Read the paytable: Knowing high-value symbols helps you judge risk versus reward.

    Big Bass Haloween 2 Slot Playing Guide

    Big Bass Haloween 2 Slot Playing Guide

Tips & Strategies for Big Bass Halloween 2 Slot: How to Maximise Winnings

  1. Bankroll Management: Decide on a clear budget in GBP. You may go through many spins before a bigger win, due to the game’s high volatility. Split your budget up into smaller sessions so as not to run out when going for those all-important bonus spins or modifiers. 

  2. Understand Volatility: Big Bass Halloween 2 has versions available at 96.71% ( the highest one) but also 95.67% and 94.60%. Always ensure to check what version your operator in the UK is offering, because a small difference in RTP may make a lot of difference through a multitude of spins.

  3. Play the Bonuses: Look out for UK casino promotions which grant you free spins on this slot or deposit bonuses with reasonable wagering requirements. 

  4. Practice in Demo Mode: Make use of the free or demo version of the game to see how the scatters produce, how the modifiers operate and the frequency of Fisherman Wilds. 

At 96.71%, the game has one of the highest official RTPs of any of those available in the Halloween genre of slots classed under the Gambling Commission.

Big Bass Halloween 2 Slot Bonuses 

Many UK casinos have the Big Bass Halloween 2 game within their Halloween promotions each year and may have special free spins offers for this game. They may have deposit bonuses such as a 100% match up to £50, plus free spins or bonuses for using the game, known as free spins. 

Demo Mode vs Real Money Mode: Why Practice Matters 

Playing in demo mode lets you sample Big Bass Halloween 2 without risking real GBP, but the game’s mechanics, paytable, modifiers, and triggering of free spins are all the same. You’ll get an idea of how scatters work, how modifiers trigger, how often Fisherman Wilds show up, and what the frequency of free spins re-triggering is.

What that helps you understand is:

  • How swings can feel large (you may see many losing spins in a row)
  • What bet size feels good under those swings
  • Which symbols are of high value and how often they pay out

When you switch to real-money mode, it gives you confidence to know where you can up or lower stakes, and eliminate surprises.

Final Thoughts and Suggestions

Use demo mode at first, manage your bankroll, chase those modifiers, and always check the casino for the best RTP version. Good luck to all UK slot enthusiasts!

Pros

  • Strong RTP (~96.71%) in its top version

  • Huge win potential (max 5,000x stake)

  • Exciting Free Spins with modifiers, retriggers, and multipliers

  • Atmospheric graphics + Halloween theme gives extra fun

Cons

  • High volatility means long dry spells — not for low-risk players

  • RTP version matters — some casinos may offer lower versions

You Can Also Try Other Similar Slot Games

If you like Big Bass Halloween 2, here are some similar slots to explore:

FAQs

What is the RTP of Big Bass Halloween 2 Slot?

The standard (highest) RTP is 96.71%, though some casinos use lower versions (95.67%, 94.60%). Always check in the game info at your chosen online casino.

How much can I win playing Big Bass Halloween 2 slot?

Maximum win is 5,000x your total stake. 

What are the minimum and maximum bets for Big Bass Halloween 2 Slot?

Minimum bet is £0.10 per spin; maximum is £250 per spin. 

Are there free spins available for Big Bass Halloween 2 slot?

Yes. Free spins are triggered by landing 3, 4 or 5 Scatters in the base game, giving you 10, 15 or 20 free spins respectively.

Can I play Big Bass Halloween 2 Slot for free before betting real GBP?

Yes. Many UK-licensed casinos provide a demo mode or ‘play for fun’ version.

David Cook
David Cook Betting Writer

David Cook is a Freelance Writer who works across a range of media-related roles in the gaming industry; a space David has worked in since 2014. David is a former editor of a B2B gaming publication. He is an NCTJ-qualified journalist and also holds a degree in sports journalism.