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Big Bass Vegas Double Down Deluxe Slot Review – RTP 96.50% & Two Fisherman Wilds

Big Bass Vegas Double Down Deluxe is a fishing-themed video slot game from Pragmatic Play / Reel Kingdom featuring the underwater action of Big Bass. This review looks at how to play, the maximum win tips, and what UK players can expect.

published: 10-10-2025

Last updated: 26-11-2025

David Cook

Betting & Casino Writer

Fact checked by:

Chad Nagel

Sports Betting & Casino Editor

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 Vegas Double Down Deluxe Slot Review

Table of Contents

Featured Casino

High RTP slots

BONUS: Wager £20 & Get 50 Free Spins a day for 5 days

Best Odds Review

4.3/5

Payout

96.89%

No. of Games

1498

Detailed Product Info

Get Bonus

Payout

96.89%

No. of Games

1498

Detailed Product Info

Get Bonus

High RTP slots

Best Odds Review

4.3/5

BONUS: Wager £20 & Get 50 Free Spins a day for 5 days Get 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. 10x wagering requirement on winnings. 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

New UK Slot Site

BONUS: Wager £20 & Get 50 Free Spins

Bet Vickers Review

4.2/5

Payout

98.45%

No. of Games

1178

Detailed Product Info

Get Bonus

Payout

98.45%

No. of Games

1178

Detailed Product Info

Get Bonus

New UK Slot Site

Bet Vickers Review

4.2/5

BONUS: Wager £20 & Get 50 Free Spins Get Bonus

Payout

98.45%

No. of Games

1178

Detailed Product Info

Full T&Cs apply 18+

18+. New verified customers only. Deposit and stake £20 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.

BONUS: Stake £10 & Get 50 Free Spins

4.3/5

Payout

97.64%

No. of Games

781

Detailed Product Info

Get Bonus

Payout

97.64%

No. of Games

781

Detailed Product Info

Get Bonus

4.3/5

BONUS: Stake £10 & Get 50 Free Spins Get Bonus

Payout

97.64%

No. of Games

781

Detailed Product Info

Full T&Cs apply 18+

New verified customer residing in the UK. Opt-in is required. Deposit and stake £10+ on any slot game. Get 50 Free Spins on Big Bass Splash. Free Spin Value: £0.10. T&Cs apply. 18+

Most Free Spins in UK!

BONUS: Wager £30 & Get 90 Free Spins

Priced Up Review

4.6/5

Payout

97.17%

No. of Games

1087

Detailed Product Info

Get Bonus

Payout

97.17%

No. of Games

1087

Detailed Product Info

Get Bonus

Most Free Spins in UK!

Priced Up Review

4.6/5

BONUS: Wager £30 & Get 90 Free Spins Get 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

BONUS: Get 100 Cash Spins

Quickbet Review

4.4/5

Payout

95%

No. of Games

1280

Detailed Product Info

Get Bonus

Payout

95%

No. of Games

1280

Detailed Product Info

Get Bonus

Quickbet Review

4.4/5

BONUS: Get 100 Cash Spins Get Bonus

Payout

95%

No. of Games

1280

Detailed Product Info

Full T&Cs apply 18+

BONUS: Bet £10 Get £30 in Free Bets

Livescore Bet Review

4.7/5

Payout

91%

No. of Games

1000

Detailed Product Info

Get Bonus

Payout

91%

No. of Games

1000

Detailed Product Info

Get Bonus

Livescore Bet Review

4.7/5

BONUS: Bet £10 Get £30 in Free Bets Get Bonus

Payout

91%

No. of Games

1000

Detailed Product Info

Full T&Cs apply 18+

*New members only. £10+ bet on sports (ex. Virtuals) 1.5 min odds, settled within 14 days. Free Bets: accept in 7 days, valid 7 days; £20 use on sportsbook, £10 on Bet Builder. Stake not returned. T&Cs + deposit exclusions apply. Bet Responsibly. GambleAware.org. 18+

BONUS: Get 100% Up to £50 + 50 Bonus Spins

4.2/5

Payout

98.99%

No. of Games

608

Detailed Product Info

Get Bonus

Payout

98.99%

No. of Games

608

Detailed Product Info

Get Bonus

4.2/5

BONUS: Get 100% Up to £50 + 50 Bonus Spins Get Bonus

Payout

98.99%

No. of Games

608

Detailed Product Info

Full T&Cs apply 18+

Best UK Casinos for Playing Big Bass Vegas Double Down Deluxe Slot

Casino	Exclusive Bonus/Offer
Kwiff	Wager £20 on slots and get up to 200 Free Spins on Book of Dead
Planet Sport Bet	Every £10 staked earns a 10p free bet
Bet UK	Get 50 Free Spins on Big Bass Splash when you deposit and wager £10
Midnite	Bet £20 and get 100 Free Spins
Star Sports	Get 100 Free Spins on Big Bass Splash when you wager £25 or more on any Big Bass slots

Best pick: Kwiffusually offers Pragmatic Play slots at the highest allowable RTP (96.50 %).

What is Big Bass Vegas Double Down Deluxe Slot?

Big Bass Vegas Double Down Deluxe is a 5-reel, 3-row video slot with 10 fixed paylines. Its theme unites fishing (boats, fish, tackle) with the glamour of Vegas (neon, casino-style).

The game is certified under the same regulatory authorities applicable to all licensed casinos in the UK and is regulated by the Gambling Commission, which guarantees fairness and integrity.

Play Big Bass Vegas Double Down Deluxe Slot 1.jpg

Key Features and Technical Specs

Aspect	Big Bass Vegas Double Down Deluxe
Game Type	Video Slot
Developer	Pragmatic Play/Reel Kingdom
Release Date	September 2024
Platforms	Desktop / Mobile / Tablet
RTP	96.50% (this can vary)
Volatility	High/Very High
Min Bet	£0.10
Max Bet	£250
Max Payout	5,000x stake
Hit Frequency	c. 12.99%
Free Spins	Yes (triggered by 3, 4 or 5 Scatter symbols
Features	Dual Fisherman Wilds, Money Symbol Collection, Hook / Dynamite / Respin / Retrigger, Ante Bet, Bonus Buy
Jackpot Type	Fixed
Licensing Authority	Gambling Commission

How to Play Big Bass Vegas Double Down Deluxe Slot

1
Select your bet : Use the “+” / “−” controls to adjust your bet between £0.10 and £250.
Big Bass Vegas Double Down Deluxe Slot Playing Guide
2
Check the paytable/rules: Click the “i” or “Paytable” button to view symbols, payouts, feature descriptions, and game mechanics.
3
Hit spin / autoplay: Hit the Spin button to spin the reels, or use Autoplay (if allowed) for multiple consecutive spins.
4
Triggering bonus/free spins: Land 3, 4 or 5 Scatter symbols to trigger 15, 20 or 25 free spins respectively. If only 2 scatters appear, triggers like respin or hook may convert a symbol into a third scatter.
5
Free Spins/collection phase: In Free Spins, both Red and Blue Fisherman Wilds may appear and collect Money Fish symbols on the reels into their respective meters.
6
Payouts & win logic: Wins are paid for matching symbols left to right on paylines (3 or more). Money Fish values are collected by wilds in free spins and multiplied when harvested.

Tips & Strategies for Big Bass Vegas Double Down Deluxe Slot: How to Maximise Winnings

Bankroll management: Since wins are less frequent, determine strict bankroll limits and per-spin limits in GBP. Think about a bankroll of 100 – 300x base bet to enable you to manage the dry spells.
Be smart with RTP: Always try and play the 96.5% RTP version. Some casinos may offer the lower (95.5%, 94.50%) versions. Check the info / rules page.
Use the ante bet sensibly: The ante bet (costing c. 1.5x stake) improves your chance of triggering free spins naturally. Use it if your bankroll permits that, especially if you are counting on bonus rounds.
Let the bonus rounds do the work: Most significant wins come from Free Spins and the collection of wilds. Concentrate expectations on activations and optimisation of free spins.
Test in demo mode: Industry mock-ups will reveal the fish bonuses, respins, collection and bonus odds for real GBP play.

This is one of an exclusive few Big Bass games to contain two separate Fisherman Wilds (red and blue) statistical data.

Big Bass Vegas Double Down Deluxe Slot Bonuses

Free Spin Bonuses: It is still normal in UK casinos to obtain free spins on this slot; sometimes as a welcome bonus or as a reload bonus.
Deposit Match Bonuses: Using deposit bonuses with this slot may mean a more extensive play period for you, but be sure to read any wagering and max bet rules.
Stake back / Cashback: Some UK sites may issue cashback facilities on lost bets. Again, check the Ts and Cs.

Demo Mode vs Real Money Mode

You can play the demo version using credits (not real GBP) before betting with real cash. The demo plays out just like the real thing, using the same mechanics.

Using the demo mode you can:

See how frequently the free spins will happen
Adjust your bets sizes without risk
Check whether you feel happy about the volatility swing

Once you have the confidence, go to real-money mode and play at small stakes. When you are comfortable, scale up thereafter.

Final Thoughts and Suggestions

Big Bass Vegas Double Down Deluxe provides a compelling recipe of fishing fun, coupled with high-stakes flair. However, due to its vastly high volatility, the player will need to show patience and discipline. Use demo mode first, set strict limits to your bankroll, and check which casinos provide the top RTP version.

Pros

Rock Solid RTP (96.50%)
Great max win (5,000x)
Unique and dual Fisherman Wilds and meters
Big bonus buy / ante options

Cons

High volatility (dry streaks)
Some operators run lower RTP settings

You Can Try Other Similar Slot Games

If you like Big Bass Vegas Double Down Deluxe, here are some good alternatives to try:

Big Bass Bonanza - standard classic version
Fishin' Frenzy – A British favourite that is simple and easy to play.
Big Bass Splash – fishing-themed volatility.
Rainbow Riches – one of the UK’s most iconic slots.
Starburst – simple, colourful, high-RTP.

FAQs

What is the RTP of Big Bass Vegas Double Down Deluxe Slot?

The default RTP is 96.50%, though some casinos may run alternate settings of 95.50% or 94.50%.

How much can I win playing Big Bass Vegas Double Down Deluxe slot?

The top win is 5,000x your bet. For example, with a £10 spin, you could win up to £50,000.

What are the minimum and maximum bets for Big Bass Vegas Double Down Deluxe Slot?

Minimum bet is £0.10 (10p). Maximum varies, but the typical top stake is £250 per spin.

Are there free spins available for Big Bass Vegas Double Down Deluxe slot?

Yes. Land 3, 4 or 5 scatter symbols to trigger 15, 20 or 25 free spins respectively.

Can I play Big Bass Vegas Double Down Deluxe Slot for free before betting real GBP?

Absolutely. Most UK casinos offer a demo mode running identical mechanics, so you can practice risk-free before wagering real money.

David Cook Betting & Casino 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.