Big Bass Bonanza is one of the most popular slots in the UK. Pragmatic Play released it in 2020, developed together with Reel Kingdom, and it quickly became a fixture in the most-played lists of British casinos. It also launched a whole series of Big Bass games, from Big Bass Splash to many seasonal versions. The appeal is easy to understand: a relaxed fishing theme, simple rules and a free spins round in which a fisherman Wild reels in fish with cash values. In this Big Bass Bonanza slot review we explain how the game works, what you can win and why it is such a hit with UK players.

Big Bass Bonanza at a Glance
| Feature | Details |
|---|---|
| Provider | Pragmatic Play (with Reel Kingdom) |
| Release | 2020 |
| Reels and rows | 5 reels, 3 rows |
| Paylines | 10 fixed lines |
| RTP | 96.71% (casinos may use a lower setting) |
| Volatility | High |
| Maximum win | 2,100x your stake |
| Stake in the UK | From £0.10 up to the £5 per spin limit (£2 for players aged 18 to 24) |
Theme and Design
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The game is set on a quiet river, with the reels floating on the water and a cheerful soundtrack in the background. The symbols are all about fishing: tackle boxes, fishing rods, floats, dragonflies and the big bass itself, alongside the usual card ranks. The fish money symbols show a cash value, and the fisherman is the Wild. The style is bright and friendly, which helps explain why the game appeals to such a wide audience, from casual players to slot enthusiasts.
How to Play Big Bass Bonanza
Big Bass Bonanza has 10 fixed paylines. Wins pay from left to right with three or more matching symbols on a line, although some high-value symbols pay from two. You choose your stake and spin. The fisherman Wild substitutes for all regular symbols, and the Scatter symbol triggers the free spins.
The money fish are the most important symbols in the game. Each one carries a random cash value shown on the symbol. In the base game they do not pay on their own, but they become very valuable in the free spins.
Free Spins and the Fisherman Wild
Three, four or five Scatters trigger 10, 15 or 20 free spins. During the round, the fisherman Wild has a special job: every time he lands, he collects the cash values of all money fish visible on the reels. A single fisherman landing on a screen full of fish can pay a large amount in one go.
The game also tracks every fisherman you land. For every fourth fisherman collected, the free spins are retriggered with 10 extra spins, and a multiplier is applied to the fish values that are collected:
- After the first retrigger: 2x multiplier
- After the second retrigger: 3x multiplier
- After the third retrigger: 10x multiplier
Reaching the 10x level with plenty of money fish on the reels is how Big Bass Bonanza delivers its biggest wins, up to 2,100x your stake.
RTP, Volatility and Maximum Win
The standard RTP of Big Bass Bonanza is 96.71%, which is above the industry average. Pragmatic Play also offers lower RTP versions, so check the game information in your casino. The volatility is high: the base game pays modest wins, and the free spins carry most of the value. Rounds without fishermen can end with very little, while a round that reaches the higher multiplier levels can pay hundreds of times your stake. The maximum win is 2,100x.
Why Big Bass Bonanza Is So Popular in the UK
Fishing-themed slots have a long history in the UK, partly thanks to Blueprint’s Fishin’ Frenzy, which introduced many players to the idea of a fisherman collecting fish values. Big Bass Bonanza took that concept, added the retrigger and multiplier ladder, and packaged it in a modern, polished game. The simple rules make it easy to start playing, while the multiplier levels give the bonus real excitement. Many UK casinos also use Big Bass games in their free spins offers.
The Big Bass Series
The success of the original led to a long series of follow-ups. The best known is Big Bass Splash, which adds random modifiers before the free spins and a higher maximum win. Other versions include Bigger Bass Bonanza, Big Bass Bonanza Megaways and seasonal titles such as Christmas Big Bass Bonanza. They all share the fisherman and money fish mechanic, but differ in volatility and features.
Playing Big Bass Bonanza in the UK
At UK-licensed casinos, slots follow the rules of the UK Gambling Commission. Autoplay and turbo spins are not allowed, spins last at least 2.5 seconds, and the maximum stake is £5 per spin for players aged 25 and over, or £2 per spin for players aged 18 to 24. Bonus buy options that are available in some other markets are usually not offered at UK casinos.
Big Bass Bonanza on Mobile
The game was designed with mobile in mind and works smoothly on iPhone, Android phones and tablets. The big, colourful symbols are easy to read on a small screen. See our guide to mobile slots in the UK.
Who Is Big Bass Bonanza For?
Big Bass Bonanza suits players who like a simple base game and an exciting bonus round. The rules can be learned in a minute, but the multiplier ladder in free spins keeps the game interesting for experienced players too. Because the volatility is high, it is best for players who accept some quiet spells. If you prefer very steady wins, a low volatility classic such as Starburst is a calmer choice.
Tips for Playing Big Bass Bonanza
- Budget for the free spins: the bonus is where the value is, so choose a stake that gives you enough spins to reach it.
- Watch the fisherman count: every fourth fisherman in free spins adds spins and raises the multiplier.
- Check the RTP: look in the game help to see which version your casino offers.
- Try the demo: see how the money fish and fisherman work before playing for real money.
Where to Play Big Bass Bonanza
Big Bass Bonanza is available at almost every UK casino with Pragmatic Play games. Browse more titles on our online slots page, and always choose a licensed casino. Read our guide to gambling with real money for tips on playing safely.
Play responsibly. Set limits, take breaks and never play with money you cannot afford to lose. For support, visit BeGambleAware.org. 18+ only.
Features
Big Bass Bonanza FAQ
What is the RTP of Big Bass Bonanza?
The standard RTP is 96.71%. Casinos can use lower settings, so check the game information.
How do free spins work in Big Bass Bonanza?
Three to five Scatters award 10 to 20 free spins. The fisherman Wild collects the cash values of all money fish on the reels.
What is the maximum win on Big Bass Bonanza?
The maximum win is 2,100x your stake.
Who makes Big Bass Bonanza?
Big Bass Bonanza is made by Pragmatic Play in partnership with Reel Kingdom, released in 2020.
Is Big Bass Bonanza high volatility?
Yes. Big Bass Bonanza has high volatility, with most of the big wins coming from the free spins.


