| RTP | 96.71% - Compare RTPs |
|---|---|
| Volatility | Medium |
| Reels | 5 |
| Paylines | 3 |
| Hit Frequency | 12.53% |
| Max Win | 2,100x |
| Features | Bonus Rounds |
Big Bass Bonanza is a fishing-themed slot from Pragmatic Play and Reel Kingdom, released in December 2020. It was the game that launched what has since become one of online slots' most recognised franchises - with over 17 Big Bass titles now in the catalogue. The original still holds up well, offering a clean collect mechanic, genuine replay value, and an RTP that sits above the industry average.
On this page you will find a full breakdown of how the game works, what the numbers look like, and what makes it worth playing - or skipping - depending on your style.
Big Bass Bonanza at a Glance
- Developer: Pragmatic Play / Reel Kingdom
- Release date: December 2020
- Reels: 5
- Rows: 3
- Paylines: 10 fixed
- RTP: 96.71%
- Volatility: Medium-high
- Max win: 2,100x your stake
- Bet range: £0.10 - £250 per spin
- Bonus feature: Free spins with Fisherman Wilds
- Mobile: Yes, HTML5
RTP and Volatility
Big Bass Bonanza runs at 96.71% RTP in its standard configuration - that is above the 96% benchmark you see across most online slots. Some casinos offer versions at 95.67% or 94.5%, so it is worth checking which variant you are playing if you care about the difference.
Volatility is medium-high. That means you will see a fair number of small wins to keep the balance ticking over in the base game, but the real money comes in the bonus round. Expect dry spells between bigger payouts - this is not a game that hands out frequent large wins. The max payout of 2,100x your stake is achievable through the free spins with multiplied collection rounds, but it requires the bonus to fire well.
Hit frequency is roughly 30%, meaning you land some kind of win on about one in three spins. Most of those base game wins are modest. The variance lives in the bonus.
Theme and Design
The fishing theme is straightforward and well-executed. You play against a lakeside backdrop with a cheerful angler character who appears as the Wild symbol. The reels show playing card royals as lower-value symbols, with fish, tackle boxes, boots, and waders making up the mid to high range. The top symbol is the big bass itself.
Audio is relaxed - gentle acoustic music with satisfying sound effects when symbols land. It is not flashy, which works in the game's favour. The design does not distract from the mechanics, and everything runs smoothly at all frame rates.
Symbols and Paytable
The paytable splits into two tiers: standard pay symbols and the special Money Fish symbols that only appear during free spins.
Standard symbols (five of a kind payouts, based on max bet):
- Big Bass: highest payer
- Fishing rod and tackle: mid-high range
- Waders and boots: mid range
- A, K, Q, J, 10: lower tier
The Fisherman Wild substitutes for all standard symbols and plays a central role in the bonus feature. The Rod Scatter triggers the free spins when three or more land simultaneously.
Bonus Features
Free Spins
This is where Big Bass Bonanza earns its reputation. Land three, four, or five Scatter symbols and you get 10, 15, or 20 free spins respectively.
During free spins, Money Fish symbols appear on the reels. Each carries a cash value printed on it. When a Fisherman Wild lands, it walks across the reel collecting all visible Money Fish values and awarding them as a cash prize. That single mechanic is the heart of the game - you are essentially hoping the Fisherman lands when the board is stacked with high-value fish.
Retriggers and Multipliers
Collect four Fisherman Wilds during free spins and you retrigger the feature with 10 additional spins. Each retrigger also adds a multiplier to the collection mechanic:
- First retrigger: 2x multiplier
- Second retrigger: 3x multiplier
- Third retrigger: 10x multiplier
The 10x multiplier on a board full of high-value Money Fish is where the game's best wins come from. It does not happen on every bonus, but when it aligns it is immediately obvious why this mechanic became the template for an entire franchise.
No Base Game Bonus Buy
In the UK-regulated version, there is no bonus buy option due to UKGC rules banning feature purchase mechanics. You trigger the free spins the old-fashioned way - by landing three scatters on the reels.
How to Play
Set your bet using the +/- controls at the bottom of the screen. Bets run from £0.10 to £250 per spin across 10 fixed paylines. Hit Spin or Auto Spin. Wins pay left to right from the leftmost reel.
In the base game, standard symbol combinations pay out. Watch for Rod Scatters - three or more anywhere on the reels triggers the free spins feature.
During free spins, Fisherman Wilds substitute for standard symbols and collect Money Fish values. You do not need to do anything differently - just watch the collection mechanic play out and hope the retrigger multipliers stack.
Mobile Play
Big Bass Bonanza is built in HTML5, so it runs in any modern mobile browser without downloads or apps. The interface scales cleanly to phone and tablet screens - buttons are well-sized and the reel area remains readable on smaller displays. The game performs well on both iOS and Android with no notable lag or loading issues.
The Big Bass Series
The original Big Bass Bonanza sparked a franchise that now spans over 17 titles. Notable entries include:
- Big Bass Bonanza Megaways - same collect mechanic, expanded reel engine
- Big Bass Splash - underwater theme variant
- Big Bass Christmas Bash - seasonal edition
- Big Bass Bonanza - Hold and Spinner - hold-and-win mechanic variation
- Big Bass Halloween - Halloween theme with the same core gameplay
- Big Bass Football Bonanza - released May 2026, football stadium setting, 96.50% RTP
All of them use variations of the fisherman collect mechanic from the original. If you enjoy the base game, the sequels offer more of the same with different visual themes and minor rule tweaks.
Verdict
Big Bass Bonanza is a well-designed slot with a clear identity. The collect mechanic during free spins is genuinely engaging - it gives each bonus round a narrative arc as you watch the Fisherman walk the reels. The 96.71% RTP is solid, medium-high volatility is manageable for most players, and the retrigger multipliers give the game real ceiling potential at 2,100x.
It is not the most complex slot on the market, but it does not need to be. The simplicity is part of the appeal - you know exactly what you are playing for and the mechanic delivers it cleanly. The franchise it spawned is evidence enough that the design worked.
If you prefer slots that pay frequently in the base game, this may frustrate. Most of the game's value lives in the bonus. But if you are comfortable with medium-high variance and enjoy a well-executed feature round, Big Bass Bonanza is worth time at the reels.
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Big Bass Bonanza Free Spins
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Big Bass Bonanza RTP and Variance
Big Bass Bonanza has an RTP of 96.71%, which is above average. See our highest RTP slots for the best returning games. Medium volatility offers a balanced mix of win frequency and payout size.