Big Bass Bonanza
Verified Feb 10, 2026Big Bass Bonanza is a fishing-themed slot from Pragmatic Play where you cast your line for big wins. During the free spins bonus, the Fisherman Wild collects the values of any money symbols on screen. Additional fisherman symbols increase the multiplier, and with up to 10 free spins retriggerable, the maximum win reaches 2100x your stake.
Default RTP
96.71%
Best Available RTP
96.71%
across tracked casinos
Worst Available RTP
94.02%
Max Win
2100x
Game Features
RTP Comparison by Casino
Default RTP: 96.71%. See how each casino compares.
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| # | Casino | RTP | vs Default | ||
|---|---|---|---|---|---|
| 1 |  Betsson | 96.71% | Default | Jan 14, 2025 | |
| 2 |  Casumo | 96.71% | Default | Jan 13, 2025 | |
| 3 |  Mr Green | 96.71% | Default | Jan 15, 2025 | |
| 4 |  Hajper | 96.71% | Default | Jan 14, 2025 | |
| 5 |  PAF | 96.71% | Default | Feb 10, 2026 | |
| 6 |  SpeedyCasino | 96.71% | Default | Feb 10, 2026 | |
| 7 |  GoldenBull | 96.71% | Default | Feb 10, 2026 | |
| 8 |  Rizk | 96.21% | -0.50% | Jan 10, 2025 | |
| 9 |  LeoVegas | 94.02% | -2.69% | Feb 10, 2026 | |
| 10 |  Unibet | 94.02% | -2.69% | Feb 10, 2026 | |
| 11 |  NordicBet | 94.02% | -2.69% | Feb 10, 2026 | |
| 12 | LuckyCasino | 94.02% | -2.69% | Feb 10, 2026 |
18+, play responsibly, www.stodlinjen.se, T&C apply.
About Big Bass Bonanza
Big Bass Bonanza is Pragmatic Play's fishing-themed slot that became one of the most-played slots in Sweden and spawned a whole series of sequels. It has five reels, ten fixed paylines and simple but addictive mechanics: collect money symbols and reel them in with the fisherman.
The key is the Free Spins round, triggered by three or more scatter symbols. There the fisherman acts as a wild and collects the value of every money symbol on screen. For every fourth fisherman you land, the multiplier rises — up to 10x — and you can retrigger free spins to keep the round going. That is how the 2100x max win is built.
RTP across casinos
Big Bass Bonanza has a theoretical default RTP of 96.71%. Across the 12 casinos we measure, the actual RTP ranges from 94.02% to 96.71% — a 2.69 percentage-point gap. In other words, which casino you choose affects your long-term return on the exact same game.
The best RTP right now is at Betsson at 96.71%.
Volatility and variance
Big Bass Bonanza has high volatility. Wins are rarer but can be large, and most of the potential sits in the bonus feature. Keep a bankroll that can absorb longer losing streaks. The max win is 2100x.
Learn more about volatility and bankroll →Strategy and tips
Big Bass Bonanza is high-volatility, so plan your bankroll for longer dry spells between bonus rounds. The base game rarely pays much on its own — wins come in Free Spins when the fisherman collects money symbols and the multiplier climbs. A steady, lower stake per spin lets you afford more attempts at the bonus. Most important: check the RTP. Several Swedish casinos run Big Bass Bonanza at just 94.02% instead of 96.71%, and Rizk sits at 96.21%. The table above shows exactly which version each casino runs.
Frequently asked questions
What is the RTP of Big Bass Bonanza?
The default RTP is 96.71%, but many Swedish casinos run a lower 94.02% version, and Rizk sits at 96.21%. The table above shows the verified RTP at each casino we measure.
How does the bonus round in Big Bass Bonanza work?
Three or more scatter symbols trigger Free Spins. During the round the fisherman becomes a wild and collects the value of every money symbol on screen. Every fourth fisherman raises the multiplier up to 10x, and you can retrigger the round.
What is the max win in Big Bass Bonanza?
The max win is 2100 times your stake, reached in the Free Spins round by combining high multipliers with large money symbols.
Which casino has the best RTP for Big Bass Bonanza?
Among the casinos we measure, Betsson, Casumo, Mr Green, Hajper, PAF, SpeedyCasino and GoldenBull run the full 96.71% RTP, while LeoVegas, Unibet, NordicBet and LuckyCasino run 94.02%. See the table above.
RTP describes a theoretical long-term return over millions of spins — not what you should expect in a single session. Always play responsibly and only with money you can afford to lose.