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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.
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Big Bass Halloween 2 Slot Review

18+. UK First Depositing Players Only. Opt-in required. First Deposit of £10 or more to qualify. Deposit Bonus to be used in specific games only. Bonus credited upon deposit. Bonus expires after 72 hours. Extra Spins credited in: Book of Dead. Wagering Requirement: 30x. Spins expire after 24 hours. Value per spin £0.10. Promotion available for 72 hours. T&C's Apply

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

18+ | 1st Deposit Only | Min Deposit £10 | Max Bet £2 | Max Bonus £100 | Max Cashout X3 The Bonus | Max Cashout from Bonus Spin Winning £100 | 30-day Bonus Expiry | 24-Hours Bonus Spins Expiry | Bonus is valid for Selected Games Only | BeGambleAware.org – T&Cs apply

Opt-in required each week via in-game pop-up or 777 icon. Real money bets only; bonus funds/free spins excluded. Leaderboard points = Win ÷ Bet × 1,000; only highest single spin counts. 1,000 cash prize winners weekly, paid as cash with no wagering, withdrawable instantly. Prizes must be claimed within 7 days via pop-up or 777 icon. Promotion runs 10 weeks. T&Cs apply. 18+ GambleAware.org.

New players only | No restrictions while playing with cash | Min. refund bonus is £10 | Wagering on bonus is 60x | Bonus based on 1st deposit lost | Max bet with bonus is £5 | Skrill and Neteller excluded |

Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5 Eligibility is restricted for suspected abuse | Skrill & Neteller deposits excluded for welcome bonus | Cashback when offered, applies to deposits where no bonus is included | Cashback is cash with no restrictions |

Casino Bonus: Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5 | Eligibility is restricted for suspected abuse | Cashback is cash with no restrictions | Skrill & Neteller deposits excluded | T&C's apply Free bet: Min odds: 2.0 - Free bet value will be deducted from free bet winnings.
Best UK Casinos for Big Bass Halloween 2 Slot
| Casino | Exclusive Bonus/Offer |
| Bet UK | Get 50 Free Spins on Big Bass Splash when you join and play £10 |
| Monster Sports | Bet £10 and get a £30 Free Bet |
| Planet Sport Bet | Drops & Wins: Grab your share of £2m every month |
| Midnite | Wager £20 or more to get 100 Free Spins on Big Bass Splash |
| Star Sports | Bet £50 and get a £25 Free Bet |
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.

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 |
How to Play Big Bass Haloween 2 Slot
- 1
Select your bet size: Use the “+” / “–” buttons under (or beside) the reels to set your stake.

Big Bass Haloween 2 Slot Playing Guide
- 2
Understand paylines and symbols: There are 10 fixed paylines. Wins require matching symbols from the leftmost reel across adjacent reels.
- 3
Spin the reels: Press “Spin” to play one round.
- 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
Modifiers & Fisherman Wilds: Before free spins, 0-5 random modifiers may apply.
- 6
Read the paytable: Knowing high-value symbols helps you judge risk versus reward.

Big Bass Haloween 2 Slot Playing Guide
Tips & Strategies for Big Bass Halloween 2 Slot: How to Maximise Winnings
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.
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.
Play the Bonuses: Look out for UK casino promotions which grant you free spins on this slot or deposit bonuses with reasonable wagering requirements.
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:
- Big Bass Splash – similar mechanics and high win potential
- Big Bass Bonanza – classic Big Bass series staple
- Fishin’ Frenzy – top-fish mechanics, fishing theme
- Starburst – simpler, low-volatility goodness
- Rainbow Riches – famously British, medium volatility
FAQs
Maximum win is 5,000x your total stake.
Minimum bet is £0.10 per spin; maximum is £250 per spin.
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.
Yes. Many UK-licensed casinos provide a demo mode or ‘play for fun’ version.

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.