Big Bass Splash Slot Review & UK Casinos Compared
We checked Big Bass Splash, the fifth game in Pragmatic Play's Big Bass fishing series, at UK casinos: the RTP each one shows for it, whose welcome spins are actually on it and what they're worth, and what changes under UK rules. Reviewed by Arthur Smith, Editor-in-Chief.
Big Bass Splash casinos compared
The casinos are shown in our listing order. Each card shows the welcome offer and key terms from our own listing. Open "What we checked" on any card to see the RTP that casino shows for Big Bass Splash and whether its welcome spins are on it, read on 12 October 2026, or why we couldn't. When we checked, MrQ, Kwiff, Virgin Bet, Midnite Casino, Sun Vegas and 32Red were showing different offers on their own sites from the ones on these cards. Read the casino's own terms before you sign up.
LottomartUKGC licence 51833New players only. Opt-in required. Claim (max. 1). Must qualify within 48 hours of issue. Play £20+ cash on eligible slots to qualify. 200 Free Spins on Fishin' Frenzy Lure 'Em In (£0.10/spin). 50 Free Spins issued immediately. Subsequent sets of 50 Free Spins will be issued 24, 48 and 72 hours after initial claim. All awards must be clamed within 24h of issue and used within 7 days of claim. All winnings credited as cash. Limited-time offer. Available to select customers. 18+. BeGambleAware.org.
What we checked at Lottomart
- Big Bass Splash RTP it shows92.05%, on its game page
- Stakes it shows10p to £5 a spin, on its game page
- Welcome offer and this gameNot on this game: its 200 spins, for invited customers, are on Fishin' Frenzy Lure 'Em In, though Big Bass Splash play counts towards the £20 qualifying stake
- Other Splash games in its lobbyBig Bass Splash 1000 (92.02% on its page), Bigger Bass Splash (92.00%) and Big Bass Halloween Splash 1000 (92.00%)
- Withdrawals (operator's figure)Debit card withdrawals: instant up to 3 days depending on the bank, counted from Lottomart's approval.
Read on its own site on 6 and 12 October 2026.
Los VegasUKGC licence 4869518+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly!
What we checked at Los Vegas
Its UK address sent us to the international site, so we could only confirm its UKGC licence.
HippodromeUKGC licence 39372New customers only. Opt-in required. Offer valid for 7 days from account registration Match Deposit Bonus Terms: 100% Match Bonus up to £100 on 1st deposit of £20+. 10x bonus wagering applies as do weighting requirements. Debit Card deposits only. Free Spin Terms: 100 Spins awarded on Big Bass Bonanza, valued at 20p per spin credited after 24 hours.18+ GambleAware.org. Bet the Responsible Way.
What we checked at Hippodrome
- Big Bass Splash RTP it showsNot on its pages: it says each game's RTP is in the game's own info panel
- Welcome offer and this gameNot on this game: its 100 spins are on Big Bass Bonanza at 20p. Its 100% match bonus can be played on Big Bass Splash, though, as slots count in full towards the 10x bonus wagering and Big Bass Splash isn't on its reduced or excluded lists
- Other Splash games in its lobbyBig Bass Splash 1000 and Bigger Bass Splash, in its Big Bass Slots section
- Withdrawals (operator's figure)Processed in up to 24 hours (may vary at weekends).
Read on its own site on 6 and 12 October 2026.
MrQFirst deposit only. Min deposit & spend £10. Max 200 spins on Fishin’ Frenzy Even Bigger Fish 3 Megaways Rapid Fire. 10p per spin. Spins credited upon spend of £10. 18+ Full T&Cs apply.
What we checked at MrQ
- Big Bass Splash RTP it shows94.60%, on its game page (its Big Bass blog lists Big Bass Splash at 96.71%, the studio's figure, which is also what its own Big Bass Q The Splash shows)
- Stakes it showsFrom 10p a spin. Its game page also prints a £25 maximum, above the £5 a spin allowed in Great Britain
- Welcome offer and this gameOn its own site: 100 spins on Big Bass Splash at 10p (£10 of spins) for a £10 first deposit, used within 48 hours, with no wagering on what they win. That's a different offer from the one on our card
- Its own Big Bass SplashBig Bass Q The Splash, its own version of the game, at 96.71% on its page
- Other Splash games in its lobbyBig Bass Q The Splash (96.71% on its page) and Bigger Bass Splash (94.50%)
- Withdrawals (operator's figure)Most withdrawals are processed instantly; otherwise up to 2 working days for checks.
Read on its own site on 6 and 12 October 2026. The welcome offer on its own site was different from the one on this card when we checked.
BetwayUKGC licence 39372New UK customers only. Deposit & Stake Min £20. Debit card only (exclusions apply). 50 Free Spins credited daily over first 3 days, 24 hours apart. 150 Free Spins total (£0.10 per spin). No wagering requirements on Free Spins Winnings. Spins expire after 7 days. 18+ GambleAware.org. Bet The Responsible Way Full Terms apply
What we checked at Betway
Its site wouldn't load from where we ran our checks, so we could only confirm its UKGC licence.
Grosvenor CasinosUKGC licence 57924New players. Min Dep £20 (Excl. PayPal & PaySafe). Max Bonus £40 on selected games & 100 Free Spins on Big Bass Splash. Wagering & max win apply. T&Cs apply. From its own terms, read on 12 October 2026: the £40 bonus can only be used on 18 named slots, and the 10x wagering applies to the deposit plus the bonus (£600 on a £20 deposit).
What we checked at Grosvenor Casinos
- Big Bass Splash RTP it shows94.60%, on its game page
- Stakes it showsFrom 10p a spin, on its game page
- Welcome offer and this gameYes: 100 spins on Big Bass Splash at 10p (£10 of spins). What they win is paid as bonus money with 10x wagering on Big Bass Splash within 7 days, and at most £100 of it can be turned into cash. The £40 bonus can be played on it too, as one of 18 games
- Its own Big Bass SplashGrosvenor Big Bass Splash, at 94.60% on its page
- Other Splash games in its lobbyBig Bass Splash 1000 (94.53% on its page), Bigger Bass Splash (94.50%) and Big Bass Halloween Splash 1000 (94.50%)
- Withdrawals (operator's figure)Most are paid into the bank within 15 minutes; debit cards without Fast Withdrawals take 1-3 working days
Read on its own site on 12 October 2026.
KwiffUKGC licence 44448Wager on any slots & get up to 200 Free Spins on Book of Dead. Wager £20 on slots and get 40 Cash Free Spins for five consecutive days. £20 wager on slots each day within the 5 days of 1st deposit to qualify.
What we checked at Kwiff
- Welcome offer and this gameNot on this game, going by its main promotions page: its 200 spins are on Book of Dead. A second Kwiff offer page puts the same 200 spins on kwiff Big Bass Splash, its own version of the game
- Its own Big Bass Splashkwiff Big Bass Splash (its RTP couldn't be read)
- Withdrawals (operator's figure)Most withdrawals are completed in under 30 minutes; extra security checks are aimed to finish within 24 hours.
Its casino lobby wouldn't load from where we ran our checks, so what's here comes from its promotions site (the offer) and its help centre (the withdrawal times), read on 6 and 12 October 2026. The welcome offer on its own site was different from the one on this card when we checked.
Virgin BetUKGC licence 54310*New members only. Must sign up via this offer link only. Deposit min £10+ cash & wager on any Slot Game within 7 days of sign-up. Accept Free Spins (£0.10p, 7-day expiry) via pop-up within 7 days of qual. Use on Eye of Horus only. T&Cs and deposit exclusions apply. Bet Responsibly. GamCare.org. 18+
What we checked at Virgin Bet
- Big Bass Splash RTP it shows92.05%, on its game information page
- Welcome offer and this gameNot on this game: its live promotions showed 100 spins on King Kong Cash Even Bigger Bananas 2, though any slot, Big Bass Splash included, counts for the £10 qualifying wager
- Other Splash games in its lobbyBig Bass Splash 1000 (94.53% in its lobby data), Bigger Bass Splash (92.00%) and Big Bass Halloween Splash 1000 (92.00%)
- Withdrawals (operator's figure)The operator aims to authorise withdrawal requests within 24 hours.
Read on its own site on 6 and 12 October 2026. The welcome offer on its own site was different from the one on this card when we checked.
Midnite CasinoUKGC licence 10183918+ New customers only. Wager £20 or more on Midnite Casino within 14 days of sign-up. Get 200 Free Spins to use on selected games, valued at 10p and valid for 7 days. T&Cs apply. BeGambleAware.org
What we checked at Midnite Casino
- Big Bass Splash RTP it shows94.60%, on its game page
- Stakes it showsFrom 10p a spin, on its game page
- Welcome offer and this gameOn its own site: 100 spins on Big Bass Splash at 10p (£10 of spins) with a promo code, after a £20 deposit and £20 spent on five named slots, Big Bass Splash one of them. The spins expire 7 days after they're added. That's a different offer from the one on our card
- Its own Big Bass SplashBig Bass Midnite Splash, at 94% on its page
- Other Splash games in its lobbyBig Bass Midnite Splash (94% on its page), Big Bass Splash 1000 (94.53%) and Bigger Bass Splash (94.50%)
- Withdrawals (operator's figure)Visa/Mastercard debit up to 5 business days; Apple Pay, Google Pay and Pay By Bank up to 72 hours.
Read on its own site on 6 and 12 October 2026. The welcome offer on its own site was different from the one on this card when we checked.
CasumoUKGC licence 6154918+. New customers only. Opt-in required. 50% Deposit Bonus up to £100 on first deposit. Min deposit £20. 10x wagering on bonus amount. Max £5 per bet. Bonus valid for 7 days. Game, play and payment method restrictions apply. Play responsibly • GambleAware.org
What we checked at Casumo
Its site wouldn't load from where we ran our checks, so we could only confirm its UKGC licence.
VoodooDreamsUKGC licence 4869518+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly!
What we checked at VoodooDreams
Its UK address sent us to the international site, so we could only confirm its UKGC licence.
Mecca GamesUKGC licence 57924New players only. Min Deposit £10 (excl. PayPal & Paysafe). £20 bonus (x10 wagering) on selected games. Max win £50. Plus 50 Free Spins (10x wagering). Max win £50. T&C's apply. From its own terms, read on 12 October 2026: the bonus can only be used on seven named slot and Slingo games, and the 10x wagering applies to the deposit plus the bonus (£300 on a £10 deposit).
What we checked at Mecca Games
- Big Bass Splash RTP it shows94.60%, on its game page
- Stakes it showsFrom 10p a spin, on its game page
- Welcome offer and this gameThe £20 bonus can be played on Big Bass Splash (one of seven games), but the 50 spins are on Kong 3 Even Bigger Bonus
- Other Splash games in its lobbyBig Bass Splash 1000 (94.53% on its page), Bigger Bass Splash (94.50%) and Big Bass Halloween Splash 1000 (94.50%)
- Withdrawals (operator's figure)Most withdrawals are instant, reaching your bank within 15 minutes (Fast Withdrawals, all major banks and PayPal).
Read on its own site on 6 and 12 October 2026.
Sun VegasUKGC licence 6775418+. New customers only. Min deposit £10 for 100% deposit match bonus up to £300 on selected games (accept within 48 hrs & wager bonus 10x within 3 days ) and 100 Free Spins on selected games (accept within 48hrs & wager winnings 10x within 3 days). Debit cards only. Offer ends 31.01.27 T&Cs Apply. GamCare.org.uk
What we checked at Sun Vegas
- Big Bass Splash RTP it showsNot published: the RTP field in its game catalogue is empty
- Welcome offer and this gameYou can play its bonus and its 100 spins at 10p on Big Bass Splash, which is one of seven games they cover. Wagering is 10x, and you've got 3 days to finish it. On its own site the match bonus is up to £100, not the amount on our card
- Other Splash games in its lobbyBig Bass Splash 1000, Bigger Bass Splash and Big Bass Halloween Splash 1000
- Withdrawals (operator's figure)Approval within 24 hours on the operator's side.
Read on its own site on 6 and 12 October 2026. The welcome offer on its own site was different from the one on this card when we checked.
32RedUKGC licence 4532218+ | GambleAware.org. New GB customers only. Opt in and play within 7 days of registration. Deposit & stake £20 on Slots to qualify for 200 x £0.10 Free Spins on Fishin' Frenzy Big Catch. Claim Spins within 48 hours of qualifying. Free Spins expire 30 days after claiming. 10x wagering on Free Spins winnings. Debit card or instant bank transfer only. T&Cs apply.
What we checked at 32Red
- Big Bass Splash RTP it showsNot given: its game page has an RTP heading but no figure
- Welcome offer and this gameOn its own site: 320 spins on Big Bass Splash at 10p (£32 of spins) when you deposit and stake £30 on slots, with 10x wagering on what they win. That's a different offer from the one on our card
- Other Splash games in its lobbyBig Bass Splash 1000, Bigger Bass Splash and Big Bass Halloween Splash 1000
- Withdrawals (operator's figure)Debit card: stays pending at least 24 hours before it is processed.
Read on its own site on 6 and 12 October 2026. The welcome offer on its own site was different from the one on this card when we checked.
666 CasinoUKGC licence 6709818+ new players only. First deposit offer: Deposit & wager £20 on Big Bass Splash for 20 spins. Wagering must be completed within 7 days of deposit. Spins awarded on Big Bass Splash. 0x wagering on winnings. www.begambleaware.org Full T&Cs apply.
What we checked at 666 Casino
- Big Bass Splash RTP it shows92.05%, in the data behind its game tiles (the game page itself says the RTP is shown in the game)
- Stakes it showsIts game page says 10p to £10 a spin, above the £5 allowed in Great Britain
- Welcome offer and this gameYes: 20 spins on Big Bass Splash at 10p (£2 of spins) once you've wagered £20 on Big Bass Splash itself, with no wagering on what they win
- Other Splash games in its lobbyBig Bass Splash 1000 (92.03% in its tile data) and Bigger Bass Splash (92.00%)
- Withdrawals (operator's figure)No processing time published; the minimum withdrawal request is £10 (smaller amounts through customer support), and debit cards can be used for withdrawals
Read on its own site on 12 October 2026.
Gala18+. New customers only. Min 1st Deposit £10. Deposit & Spend £10 on selected slots to get 150 Free Spins (£0.10 each, valid for 7 days, selected games). Claim within 7 days from reg. Player restrictions and T&Cs apply.
What we checked at Gala
- Welcome offer and this gameCouldn't check it against this game: its casino site was blocked from where we ran our checks, and its help centre describes a different welcome offer (a £40 bonus and 50 spins on Big Bass Bonanza)
- Withdrawals (operator's figure)From instant to five banking days depending on the method, on top of Gala's own processing time
Its casino site wouldn't load from where we ran our checks, so what's here comes from its help centre, read on 12 October 2026.
Hyper CasinoUKGC licence 38758New players only | Deposit & wager at least £10 to get cash spins | Offer must be activated before depositing | Cash Spins winnings are cash | No max cash out | Eligibility is restricted for suspected abuse | Skrill deposits excluded | Cash Spins value £0.20 per spin | Cash Spins expire in 48 hours | T&C's Apply | Responsible Gambling tools and support | Gambling can be addictive. Play Responsibly. 18+
What we checked at Hyper Casino
Its site wouldn't load from where we ran our checks, so we could only confirm its UKGC licence.
LiveScore VegasUKGC licence 56859*New LiveScore Bet members only. Must sign up via this offer link. Wager within 7 days of reg. Accept Free Spins to use on King Kong Cash Even Bigger Bananas Jackpot King via pop up within 24 hrs of qualifying (10p spin value, 3 days expiry). T&Cs + deposit exclusions apply. Bet Responsibly. GambleAware.org. 18+
What we checked at LiveScore Vegas
- Big Bass Splash RTP it shows92.05%, in the data behind its game tiles, not on a page
- Welcome offer and this gameNot on this game: its 100 spins are on King Kong Cash Even Bigger Bananas Jackpot King, though any slot counts for the £10 qualifying wager
- Other Splash games in its lobbyBig Bass Splash 1000 (94.53% in its lobby data), Bigger Bass Splash (92.00%) and Big Bass Halloween Splash 1000 (92.00%)
- Withdrawals (operator's figure)Internal processing within 24 hours of the request.
Read on its own site on 6 and 12 October 2026.
BuzzBingoUKGC licence 5759418+. 1st deposit only. Stake £10 qualifying slots within 14 days of sign-up. £20 slots bonus (10p max. spin) on same slots. 10x wagering reqs. T&Cs apply
What we checked at BuzzBingo
- Big Bass Splash RTP it shows92.05%, in its game info, though the FAQ on the same page says 94.60%
- Welcome offer and this gameNot on this game: the bonus spins are on 10 King Kong and Fishin' Frenzy slots, and Big Bass Splash play doesn't count towards the offer
- Other Splash games in its lobbyBig Bass Splash 1000 (92.02% in its game info), Bigger Bass Splash (92.00%) and Big Bass Halloween Splash 1000 (no RTP shown)
- Withdrawals (operator's figure)Aims to process requests within 1 hour; some methods take 2-5 working days to reach the bank
Read on its own site on 12 October 2026.
Where should you play Big Bass Splash?
At a UKGC-licensed casino that shows a high RTP for it. If you plan to take a welcome offer, check whether its spins are on this game. Of the casinos here that give a figure, MrQ, Grosvenor Casinos, Midnite Casino and Mecca Games showed the highest, 94.60%, while five gave 92.05%. None showed the studio's 96.71% for the standard game, though MrQ's own version, Big Bass Q The Splash, does. The game came out in June 2022, the fifth in Pragmatic Play's Big Bass fishing series. Welcome spins on it come from Grosvenor Casinos (100 at 10p) and 666 Casino (20 at 10p). MrQ, Midnite Casino and 32Red put theirs on it too, on their own sites, but our cards for them show other offers. The same game can show a different RTP from one casino to the next, so check the figure on its info screen where you play.
All 19 casinos here held an active UKGC licence when we checked (6 and 12 October 2026), and each card has the details.
Big Bass Splash RTP and welcome spins at each casino
| Casino | Big Bass Splash RTP it shows | Welcome spins on this game? |
|---|---|---|
| Lottomart | 92.05% | No (Fishin' Frenzy) |
| Hippodrome | Not shown | Bonus yes, spins no |
| MrQ | 94.60% | Yes on its site: 100 at 10p |
| Grosvenor Casinos | 94.60% | Yes: 100 at 10p |
| Kwiff | Couldn't check (lobby didn't load) | No (Book of Dead on its main offer page) |
| Virgin Bet | 92.05% | No (King Kong Cash, on its site) |
| Midnite Casino | 94.60% | Yes on its site: 100 at 10p |
| Mecca Games | 94.60% | Bonus yes, spins no |
| Sun Vegas | Not shown | Yes, one of 7 games |
| 32Red | Not shown | Yes on its site: 320 at 10p |
| 666 Casino | 92.05% (tile data) | Yes: 20 at 10p |
| Gala | Couldn't check (site didn't load) | Couldn't check |
| LiveScore Vegas | 92.05% (tile data) | No (King Kong Cash) |
| BuzzBingo | 92.05% (its FAQ says 94.60%) | No (other slots) |
How we checked these casinos
Licences first. We looked up every casino on this page on the Gambling Commission's public register, and every one had an active licence (6 and 12 October 2026). Each card's licence number links to its entry.
Then the game. On 12 October 2026 we read each casino's own Big Bass Splash page where it had one, its game data, any branded version of the game it runs and its welcome offer terms, logged out: the RTP it shows, the stakes it lists, and whether its welcome spins or bonus can be used on Big Bass Splash. Where the offer on a casino's own site differed from our card, the card says so. The UK sites of five casinos wouldn't load from where we ran our checks, or sent us to an international version, and two more wouldn't show us their casino lobby; their cards say which.
The game details come from Pragmatic Play's and Reel Kingdom's own pages and the rules screens of Pragmatic's free demo, and the UK rules from the Gambling Commission. We didn't deposit or play for real anywhere for this page, and withdrawal times are the operators' own figures, read on 6 and 12 October 2026. Our page on how we rank casinos explains the rest of our method.
Big Bass Splash game details
Big Bass Splash is a 5-reel, 3-row, 10-payline fishing slot. Pragmatic Play announced its launch on 23 June 2022 as the fifth game in its Big Bass series, and publishes a 96.71% RTP and a 5,000x top win, more than double the original's 2,100x. These are the figures that matter if you play in the UK:
| Launched | June 2022 (Pragmatic's announcement, 23 June 2022) |
|---|---|
| Made by | Reel Kingdom, released by Pragmatic Play |
| Reels and paylines | 5 reels, 3 rows, 10 paylines, paying left to right |
| RTP | 96.71% (Pragmatic Play); 92.05% to 94.60% at the casinos here that show one |
| Stakes in Great Britain | Up to £5 a spin (£2 if you're 18 to 24) |
| Max win | 5,000x your stake: £25,000 at £5 |
| Free spins | 10, 15 or 20 for 3, 4 or 5 scatters |
| Modifiers | Up to five, picked at random before each free spins round |
| Retriggers | Every 4 fishermen collected: 10 more spins at 2x, then 3x, then 10x |
| Fish values | From 2x to 5,000x your total bet |
| Volatility | Medium on the game's own info screen; the casinos here that rate it mostly say high |
| Bonus buy | None in Pragmatic's UK demo (100x in its international demo) |
What's the RTP of Big Bass Splash at each UK casino?
Lower than the studio's figure, at every casino here that shows one. Pragmatic Play publishes 96.71% for Big Bass Splash, but the nine casinos on this page that show a figure for the standard game gave between 92.05% and 94.60%.
The RTP each casino gave for the standard Big Bass Splash on 12 October 2026, on its own pages or in its own game data:
- 94.60%: MrQ, Grosvenor Casinos, Midnite Casino and Mecca Games
- 92.05%: Lottomart, Virgin Bet, 666 Casino (in the data behind its game tiles), LiveScore Vegas (in the data behind its game tiles) and BuzzBingo (though the FAQ in its game info says 94.60%)
Hippodrome, Sun Vegas and 32Red gave no figure for it on the pages we could read, so at those three the game's own info screen is the place to look.
RTP is the average share of the money staked that a game pays back over a huge number of spins. It won't predict an evening's play. What it does tell you is the cost of playing over time:
Put in pounds, £100 of spins costs you £3.29 at 96.71%, £5.40 at 94.60% and £7.95 at 92.05% on average over the long run. A single session can go either way, but over time the lower RTP takes more.
Casino-branded versions
Some casinos here run their own branded copy of the game next to the standard one. When we checked:
- MrQ: Big Bass Q The Splash at 96.71%, above the 94.60% it shows for the standard game
- Grosvenor Casinos: Grosvenor Big Bass Splash at 94.60%, the same as the 94.60% it shows for the standard game
- Kwiff: kwiff Big Bass Splash (we couldn't read its RTP)
- Midnite Casino: Big Bass Midnite Splash at 94%, below the 94.60% it shows for the standard game
The branded game pages we could read give the same 5,000x top win as the standard game, but the RTP doesn't have to match, so compare the two if your casino has both.
Whichever version you pick, the figure that counts is the one inside the game. A UK-licensed casino has to make a game's rules, and its RTP or odds of winning, easy to find before you play. In Big Bass Splash they're on the rules pages behind the "i" button. For RTPs on other slots, see our slot sites comparison.
Which welcome offers give free spins on Big Bass Splash?
Five of the casinos here put their welcome spins on Big Bass Splash itself when we checked, going by their own sites, and Sun Vegas lets you play its spins on it as one of seven games. For three of those five, the casino's own offer isn't the one on our card.
How the welcome offers on this page treat Big Bass Splash, going by each operator's own terms on 12 October 2026:
- MrQ: On its own site: 100 spins on Big Bass Splash at 10p (£10 of spins) for a £10 first deposit, used within 48 hours, with no wagering on what they win. That's a different offer from the one on our card.
- Grosvenor Casinos: Yes: 100 spins on Big Bass Splash at 10p (£10 of spins). What they win is paid as bonus money with 10x wagering on Big Bass Splash within 7 days, and at most £100 of it can be turned into cash. The £40 bonus can be played on it too, as one of 18 games.
- Midnite Casino: On its own site: 100 spins on Big Bass Splash at 10p (£10 of spins) with a promo code, after a £20 deposit and £20 spent on five named slots, Big Bass Splash one of them. The spins expire 7 days after they're added. That's a different offer from the one on our card.
- 32Red: On its own site: 320 spins on Big Bass Splash at 10p (£32 of spins) when you deposit and stake £30 on slots, with 10x wagering on what they win. That's a different offer from the one on our card.
- 666 Casino: Yes: 20 spins on Big Bass Splash at 10p (£2 of spins) once you've wagered £20 on Big Bass Splash itself, with no wagering on what they win.
- Sun Vegas: You can play its bonus and its 100 spins at 10p on Big Bass Splash, which is one of seven games they cover. Wagering is 10x, and you've got 3 days to finish it. On its own site the match bonus is up to £100, not the amount on our card.
- Hippodrome: Not on this game: its 100 spins are on Big Bass Bonanza at 20p. Its 100% match bonus can be played on Big Bass Splash, though, as slots count in full towards the 10x bonus wagering and Big Bass Splash isn't on its reduced or excluded lists.
- Mecca Games: The £20 bonus can be played on Big Bass Splash (one of seven games), but the 50 spins are on Kong 3 Even Bigger Bonus.
The other welcome spins we could read were on different games: Lottomart, Virgin Bet, LiveScore Vegas and BuzzBingo. Kwiff's main offer page puts its 200 spins on Book of Dead, though a second Kwiff offer page puts the same spins on kwiff Big Bass Splash, its own version of this game. Check which slot an offer names before you count on spins for this one.
We couldn't check Gala against this game.
In theory, spins return their stake times the RTP on average, before any wagering, and any one batch can return far less, or nothing. Going by the offers on the operators' own sites: 32Red's 320 spins are £32 of play, but it doesn't show an RTP for the game, so we can't put a figure on the average return; MrQ's, Grosvenor Casinos' and Midnite Casino's 100 spins at 10p are £10 of play each, worth about £9.46 on average at 94.60%; 666 Casino's 20 spins at 10p are £2 of play, worth about £1.84 on average at 92.05%.
Besides the number of spins, look at two things: what each spin is worth, and what happens to the winnings. With no wagering, what you win is cash. With 10x wagering, a £5 win has to be played through £50 before you can withdraw it. Since 19 January 2026 the Gambling Commission has capped wagering at 10 times the bonus. Our slot sites guide explains what 10x means in practice.
The free spins you win inside the game by landing scatters aren't a casino offer at all. They belong to the paid spin that set them off, so you don't stake anything more for them.
How Big Bass Splash works
Five reels, three rows and 10 paylines that pay from left to right: the layout is the same as the first Big Bass game's. It's a Reel Kingdom game, with the studio's logo on the loading screen, and Pragmatic Play announced its launch on 23 June 2022. It has done well here since: in a November 2025 news post, Pragmatic said it had been the gambling group Entain's top-performing online slot in the UK that year.
The fish are money symbols. Each one shows a cash value on every spin, but you only collect it in the free spins, when the fisherman wild lands and reels in every fish on screen. The values are 2x, 5x, 10x, 15x, 20x, 25x, 50x, 100x, 200x, 500x, 1,666x, 2,500x or 5,000x your total bet.
The base game gets a bit of help that the original didn't have. When two scatters land and a third doesn't, the game can sometimes step in, either with a nudge (the reels holding scatters drop one place and the others spin again) or with a hook that pulls a reel up to show a scatter.
Volatility is less clear-cut. Pragmatic's pages don't rate it, the game's own information screen says medium, and the casinos here that rate it mostly say high. The RTP your casino shows is the more useful number.
Big Bass Splash free spins, modifiers and retriggers
Land three scatters for 10 free spins, four for 15 or five for 20. Before the round starts, the game draws up to five random modifiers, and it can draw none at all:
- More Fish: more fish symbols on the reels.
- More Fisherman: more of the wilds that collect them.
- More Dynamites, Hooks and Bazookas: the three helper features turn up more often.
- Start From Level 2: the round begins on the second level, where collected fish already pay double.
- +2 Spins: two extra spins at the start, and two more every time the round retriggers.
In the round, every fisherman that lands is counted. Each fourth one adds 10 spins, played once the ones you have left run out, and the fish collected in those spins are multiplied: 2x the first time, then 3x, then 10x. After that there are no more retriggers. By our count from the rules, a round can run to 50 spins, or 58 with the +2 Spins modifier. Start From Level 2 leaves only two retriggers, so a round with it tops out at 40, or 46 with +2 Spins.
Three helpers can also turn up in the round. If fishermen land with no fish, dynamite can throw some on. If fish land with no fisherman, a hook can drag a reel up to bring one in. And with fishermen but no fish on screen, a bazooka can swap every other symbol for a new one. If the round reaches the 5,000x maximum, it ends there and any spins left are lost.
Big Bass Splash max win: what's the most you can win in the UK?
The top prize is 5,000 times your stake, well over double the 2,100x of the original Big Bass Bonanza. Online slot stakes in Great Britain are capped at £5 a spin, or £2 if you're 18 to 24, so the most a single spin can pay here is £25,000, or £10,000 for younger players. At 10p a spin it's £500.
Other sites quote a £1,250,000 top win. That's 5,000 times a £250 bet, as high as Pragmatic's free demo goes, even in its UK version, but no UK-licensed casino can take a bet that size, so the figure doesn't apply here.
Some casino game pages still print figures that Great Britain's rules don't allow. When we checked, MrQ's page gave a £25 maximum bet and 666 Casino's page gave a £10 maximum bet; Grosvenor Casinos and Mecca Games listed a £250,000 maximum payout and MrQ listed a £125,000 maximum payout. No UK-licensed casino can take more than £5 on a spin, so the real ceiling is the £25,000 above.
What changes when you play Big Bass Splash in Great Britain?
The Big Bass Splash you play at a UK casino isn't quite the one in videos from elsewhere. The Gambling Commission's design rules and the government's stake limits change a few things:
- No buying the free spins. Pragmatic's international demo lets you buy the round for 100 times your bet; its UK demo has no buy button at all. In January 2020 the Commission said it had found six operators selling "feature buy-in" on slots, all six removed it, and it told other licensees to do the same.
- No autoplay. Every spin has to be started by you.
- 2.5 seconds a spin, at least. That's 1,440 spins an hour at most, with no turbo, quick spin or slam stop. The UK demo has no spin-speed setting.
- Your session on screen. The casino has to show your net position (wins minus losses) and how long you've been playing. The UK demo shows a clock next to the game name.
- No fanfare for a loss. A spin that pays back your stake or less can't get win sounds or animations.
- A £5 stake cap, or £2 for 18 to 24-year-olds, in force since April and May 2025.
You may still read about a buy on UK casino sites: 32Red's Big Bass Splash page says the bonus round can be bought for 100 times the bet, and Grosvenor Casinos' page for its own Grosvenor Big Bass Splash has a Buy Free Spins section. We didn't open those games to check, but Pragmatic's UK demo has no buy button, so treat those lines as page copy rather than a feature you can count on.
Big Bass Splash vs Big Bass Bonanza, Splash 1000 and Bigger Bass Splash
Big Bass Bonanza, Big Bass Splash and Splash 1000 share five reels, three rows and 10 paylines, while Bigger Bass Splash adds a fourth row (the casinos that list its paylines give 12). The biggest difference is the top prize. On the studio's own figures:
| Game | Launched | Max win | Studio RTP |
|---|---|---|---|
| Big Bass Bonanza | December 2020 | 2,100x | 96.71% |
| Big Bass Splash | June 2022 | 5,000x | 96.71% |
| Bigger Bass Splash | Not found | 5,000x | 96.50% |
| Big Bass Splash 1000 | December 2025 | 25,000x | 96.52% |
Next to the original, Splash adds the nudge and hook in the base game, the modifiers before free spins, and the hook and bazooka alongside the dynamite. Splash 1000 raises the top win to 25,000x, which is £125,000 at the £5 cap, and Pragmatic describes a 450x Super Free Spins buy for it, though its UK demo has no buy option.
The other Splash games follow the same pattern, with the casinos here showing figures below the studio's. What they showed when we checked, some of it from the data behind their game tiles:
- Big Bass Splash 1000 (studio figure 96.52%): 94.53% at Grosvenor Casinos, Virgin Bet, Midnite Casino, Mecca Games and LiveScore Vegas; 92.03% at 666 Casino; 92.02% at Lottomart and BuzzBingo
- Bigger Bass Splash (studio figure 96.50%): 94.50% at MrQ, Grosvenor Casinos, Midnite Casino and Mecca Games; 92.00% at Lottomart, Virgin Bet, 666 Casino, LiveScore Vegas and BuzzBingo
- Big Bass Halloween Splash 1000 (no studio page found): 94.50% at Grosvenor Casinos and Mecca Games; 92.00% at Lottomart, Virgin Bet and LiveScore Vegas; listed without a figure at Sun Vegas, 32Red and BuzzBingo
At Virgin Bet and LiveScore Vegas, the lobby data put Big Bass Splash 1000 at 94.53% while the standard game showed 92.05%, so the newer game had the higher RTP there. Our Big Bass Bonanza page does the same comparison for the original game at these casinos.
Big Bass Splash tips: what actually makes a difference
No pattern or system changes what the next spin does. The decisions that help are the ones you make before you spin.
Start with the casino: MrQ, Grosvenor Casinos, Midnite Casino and Mecca Games showed 94.60% for the standard game, against 92.05% at five others, when we checked. Then think in hours rather than spins. At the fastest pace the rules allow, 1,440 spins an hour, 20p spins come to £288 staked, which costs about £15.55 on average at 94.60% and £22.90 at 92.05%.
Got a casino with its own branded version? Check its RTP against the standard game's. Judge welcome spins by their value and their wagering, not the headline number. Before you start, set a limit too: a UK-licensed casino has to offer you one before your first deposit.
Can you play Big Bass Splash for free?
Yes. Pragmatic Play has a free demo, and it's a decent way to watch the modifiers and the nudge in action before you spend anything. At a UK-licensed casino, though, you have to verify your age before you can play even the free version.
Two things the demo won't show you: the RTP at your casino, because it shows the studio's 96.71%, and the stakes you can really play at, because it goes up to £250 a spin.
Is Big Bass Splash legit, and what about "not on GamStop" sites?
Big Bass Splash itself is genuine. Reel Kingdom built it, Pragmatic Play released it, and a UK-licensed casino must have it tested before launch and keep checking it pays out as designed. The sites around it are another matter. Search for the game and you'll find pages calling themselves its official site, some quoting £250 stakes or crypto deposits that no UK-licensed casino offers, and others promoting casinos that aren't on GamStop. Pragmatic Play's own website is pragmaticplay.com.
Every online casino licensed in Great Britain has had to be part of GamStop since 31 March 2020, so a casino offering Big Bass Splash "not on GamStop" doesn't hold a UK licence. Each card on this page shows the casino's licence number, linked to the Commission's register, and our guide to avoiding casino scams has more checks you can make.
Big Bass Splash FAQ
Where can I play Big Bass Splash in the UK?
Big Bass Splash was in all 12 lobbies we could see on 12 October 2026; the other seven casinos here wouldn't show us theirs. Whichever you choose, open the game's info screen and check its RTP before you spin.
What is the RTP of Big Bass Splash?
Pragmatic Play publishes 96.71%, but the casinos here showed less for the standard game. When we checked, the figures were 94.60% and 92.05%, with 94.60% the highest, at MrQ, Grosvenor Casinos, Midnite Casino and Mecca Games. To see the figure your casino runs, open the game's rules with the "i" button.
Which UK casino has the best RTP for Big Bass Splash?
Of the nine casinos here that give a figure, MrQ, Grosvenor Casinos, Midnite Casino and Mecca Games showed the highest, 94.60%, when we checked. MrQ's own branded copy, Big Bass Q The Splash, showed 96.71%. The other ten showed none or we couldn't read their sites. All 19 casinos here held an active UKGC licence when we checked.
Do casinos have their own versions of Big Bass Splash?
Some do. When we checked, MrQ has Big Bass Q The Splash at 96.71%, Grosvenor Casinos has Grosvenor Big Bass Splash at 94.60%, Kwiff has kwiff Big Bass Splash and Midnite Casino has Big Bass Midnite Splash at 94%. Of the branded copies whose RTP we could read, Big Bass Q The Splash was the only one above the standard game at its casino (94.60%). The branded pages we could read give the same 5,000x top win as the standard game (we couldn't open Kwiff's), so the RTP is the thing to compare.
What is the max win on Big Bass Splash?
5,000 times your stake. With Britain's £5 cap on a slot spin that's £25,000, or £10,000 at the £2 limit for 18 to 24-year-olds, and a free spins round stops as soon as it gets there.
What is the maximum bet on Big Bass Splash in the UK?
£5 a spin if you're 25 or over and £2 if you're 18 to 24, the legal limits for online slots in Great Britain. A £250 top bet you might see matches Pragmatic's free demo, which keeps it even in its UK version; no UK-licensed casino can accept it.
How do you trigger free spins on Big Bass Splash?
Land three scatters for 10 free spins. Four get you 15 and five get you 20, and when only two show up, a nudge or a hook sometimes pulls in the third. Once you're in, each fourth fisherman adds 10 more spins with a bigger multiplier on the fish: 2x, then 3x, then 10x.
What do the modifiers do on Big Bass Splash?
Before each free spins round the game picks up to five at random: More Fish, More Fisherman, More Dynamites, Hooks and Bazookas, Start From Level 2, and +2 Spins. Each one gives that round a boost, for example by starting it at the 2x level or adding two spins every time it retriggers. Some rounds get none.
Which casinos give free spins on Big Bass Splash?
Going by the offers on this page, Grosvenor Casinos' welcome offer gives 100 spins at 10p (£10 of spins) on it; 666 Casino's welcome offer gives 20 spins at 10p (£2 of spins) on it. On their own sites, MrQ gave 100 at 10p, Midnite Casino gave 100 at 10p and 32Red gave 320 at 10p, though our cards for them show different offers. Sun Vegas' spins can be played on it as one of seven games. Check the casino's own terms before you sign up, because offers change.
Can you withdraw what you win from Big Bass Splash free spins?
It depends on the offer. MrQ's and 666 Casino's welcome spins on Big Bass Splash carry no wagering, so what they win is cash. Grosvenor Casinos, 32Red and Sun Vegas ask for 10x wagering on the winnings first, and Grosvenor Casinos turns at most £100 of it into cash. Midnite Casino's terms don't give a wagering figure for its spins. Check the full terms before you claim.
Can you get free spins on Big Bass Splash with no deposit?
Not from the casinos on this page: every welcome offer here needs a deposit. The spins on Big Bass Splash that we found all come after a first deposit, from 20 at 10p at 666 Casino to 320 at 10p at 32Red. Be wary of sites promising no-deposit spins on it without a UK licence number you can check.
Can you buy the bonus on Big Bass Splash in the UK?
No. Pragmatic's international demo has a buy for 100 times your bet, but its UK demo has none, and in 2020 the Gambling Commission had operators remove "feature buy-in" options from slots. In Great Britain you reach the free spins by landing the scatters.
Can I play Big Bass Splash for free?
Yes, in demo mode. Pragmatic Play runs a free demo of the game. If you'd rather try it at a UK-licensed casino, the casino has to verify your age before you can play its free games.
Is Big Bass Splash high volatility?
The casinos here that rate it mostly say so, but the game's own information screen calls it medium, and Pragmatic's pages don't rate it. The RTP your casino shows is the firmer number to go on.
Is Big Bass Splash better than Big Bass Bonanza?
It has the bigger ceiling: 5,000x against 2,100x, with more features to help in the free spins. On paper both pay 96.71%, but the casinos here list lower figures for both, and not always the same ones. Look at both numbers at your casino before you pick.
What's the difference between Big Bass Splash and Big Bass Splash 1000?
Splash 1000 arrived in December 2025. Its top win is 25,000x, which is £125,000 at Britain's £5 cap, against 5,000x for the original, and its studio RTP is 96.52% rather than 96.71%. You trigger the free spins the same way, and the retrigger ladder still goes 2x, 3x, 10x. The highest RTP for it at the casinos here was 94.53%, at Grosvenor Casinos, Virgin Bet, Midnite Casino, Mecca Games and LiveScore Vegas.
Is Big Bass Splash legit, or is it rigged?
It's legit. Big Bass Splash is a real Reel Kingdom slot, released by Pragmatic Play, and any UK-licensed casino offering it must have it tested before launch and keep checking that it pays out as designed. The fakes are the lookalike "official" sites around it, some quoting £250 stakes or pushing casinos that aren't on GamStop.
Can I play Big Bass Splash at casinos not on GamStop?
Not at a casino the Gambling Commission licenses. Every GB-licensed online casino has had to take part in GamStop since 31 March 2020, so a casino offering the game "not on GamStop" isn't licensed here, and you'd lose the protections that come with a UK licence, from tested games to the £5 stake cap. If you've signed up to GamStop, that block is there to protect you, and GamCare's free helpline (0808 8020 133) can help if it's hard to stick to.
Who makes Big Bass Splash, and when did it come out?
Reel Kingdom made it and Pragmatic Play released it. Reel Kingdom lists it among the games on its own website, and the game's loading screen shows the Reel Kingdom logo with "Powered by Pragmatic Play". Pragmatic announced the launch on 23 June 2022 and called it the fifth game in the Big Bass series.
Arthur's been reviewing UK online casinos for 13 years. He's Editor-in-Chief of 10 Best Casinos and reviewed this page.
- Pragmatic Play: Big Bass Splash
- Reel Kingdom: Big Bass Splash
- Pragmatic Play: Big Bass Splash launch (June 2022)
- Pragmatic Play: Big Bass Splash 1000 launch (December 2025)
- Pragmatic Play: Big Bass series and Entain (November 2025)
- Reel Kingdom: Bigger Bass Splash
- Gambling Commission: public register
- Gambling Commission: online slots stake limits
- Gambling Commission: online slots design rules
- Gambling Commission: RTS 14, responsible product design
- Gambling Commission: RTS 8, autoplay
- Gambling Commission: RTS 3, game rules and RTP
- Gambling Commission: games warning (feature buy-in, 2020)
- Gambling Commission: SR code 5 (10x wagering cap)
- Gambling Commission: how online games are checked for fairness
- Gambling Commission: SR code 3.2.11, age checks before free play
- Gambling Commission: GAMSTOP for all online operators
- GamCare: National Gambling Helpline
- GamStop: self-exclusion