Big Bass Bonanza
This demo version does not require any deposits and is for informational purposes only. Play responsibly – BeGambleAware.org. 18+.

Big Bass Bonanza Free Play

The Big Bass Bonanza demo gives you the chance to test the mechanics without risk, seeing how the fisherman collects prizes and applies multipliers during free spins.

Pragmatic Play
34 games
96.71%
Return to player
£0.1
Min bet
2100x
Max win
med-hi
Volatility
About the game

Big Bass Bonanza is a slot from Pragmatic Play where the main goal is to catch as many fish as possible, with the bearded fisherman bringing multipliers and collecting prizes. This Big Bass Bonanza review is the starting place before exploring the rest of the series in our free slots hub.

Tested Data: Big Bass Bonanza

Testing was carried out using a custom simulator that replicates human-like spin behavior without autoplay acceleration. Each spin’s wager, win, and resulting balance were recorded to assess short-term RTP drift and volatility rhythm. The session contained both RTP and Profit tracking to correlate payout bursts with recovery intervals.

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Tested Data Big Bass Bonanza

Session Analysis

Last Session (195 spins). Despite a modest spin count, the slot displayed high short-term volatility. Most returns clustered below 5×, yet a single ×124 hit triggered a full balance recovery, driving RTP above 113 %. The graph shows a prolonged downward drift before an abrupt late rebound — a textbook burst-pattern session typical for high-variance titles.

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Big Bass Bonanza 100+ spins
MetricValue
Total Bet195.00
Total Win222.00
Profit+27.00
Session RTP113.85 %
Max Win (session)×124.00
Any Win (win > 0)23
Win < Bet11 (47.8 %)
1x–5x Win7 (30.4 %)
X5 Win (≥ 5×)5 (21.7 %)
X10 Win (≥ 10×)5 (21.7 %)
X20 Win (≥ 20×)3 (13.0 %)
Average Win Frequency1 win / 8.5 spins

All-Time Statistics (11 195 spins / 11 sessions). Long-term data settles near 97% RTP confirming gradual convergence to expected returns. Distribution reveals frequent low-tier wins counterbalanced by rare heavy hits above ×20. The 283× record win stands out as a high-impact bonus payout.

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Big Bass Bonanza RTP
MetricValue
Total Bet11 195.00
Total Win10 930.50
Average RTP (all sessions)97.64 %
All-Time Max Win×283.00
Any Win (win > 0)1 485
Win < Bet422 (28.4 %)
1x–5x Win713 (48.0 %)
X5 Win (≥ 5×)350 (23.6 %)
X10 Win (≥ 10×)265 (17.8 %)
X20 Win (≥ 20×)176 (11.8 %)
Average Win Frequency1 win / 7.5 spins

Slot Behaviour

Big Bass Bonanza stays true to its volatility — quiet stretches punctuated by rare, explosive catches. In thousands spins, it shows RTP about 97%. For a real player with a healthy session time, Big Bass is a pretty long dry run of losses and tiny wins (below x5) with an opportunity to catch a big one eventually if you’re patient enough.

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Swift Casino
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#AD. New Unibet UK customers who deposit at least £10 via debit card can claim 200 free spins for Big Bass Bonanza. Free spins are worth £0.10 each and credited after deposit. Winnings from these spins are subject to a 30x wagering requirement and must be completed within 30 days of opt-in. Opt-in/claim timing and eligible payment methods apply; some slot titles are excluded from contributing to wagering. Withdrawals before wagering completion will cancel bonus funds. Full Terms & Conditions available at https://unibet.co.uk/
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#AD. New UK customers who opt in and make a first deposit of at least £10 (debit card) and stake £10 on any slot the same day receive 50 Free Spins on Big Bass Splash. Spins are worth £0.10 each, credited within 24 hours of the qualifying wager and must be claimed in Bonuses. Winnings from spins are paid as cash with no wagering requirements. Offer limited to one per person; cannot be combined with other promotions or household restrictions apply. Full Terms & Conditions available at https://www.highbet.com/en-gb/casino

Big Bass Bonanza: Slot Overview

The slot comes in a light cartoon style. Behind the reels is an underwater scene with bubbles, plants and a sense that something might bite any second. 

Graphics & Sound: Underwater Fishing Theme

Symbols stick to the fishing theme: floats, tackle boxes, rods, dragonflies and fish with cash values. Winning icons pulse slightly to show the line, while scatters animate as if a fish is about to grab the hook. In free spins, the fisherman shows up, smiling each time he scoops the catch. There is also a battery saver option in the settings, which reduces animation speed to conserve power.

The audio is calm and laid-back, with extra touches like the click of the reels and the pop of bubbles. Wins add a bright chime, and when scatters land, the music simply speeds up to match the action. If the melody gets tiring, you can mute it, keep only the effects, or turn off all sound altogether.

Big Bass Bonanza Free Play

Volatility & RTP

Big Bass Bonanza RTP is 96.71%, which is in line with other Pragmatic Play titles. Volatility is rated medium-high (4/5): free spins may trigger at a reasonable pace, but larger wins are less frequent.

The maximum win is capped at x2,100 the stake — once this limit is reached in the bonus round, the feature ends immediately and any remaining spins are forfeited.

How to Play Big Bass Bonanza

During Big Bass Bonanza demo play, bets are placed with virtual credits. The stake is adjusted using the «+» and «-» buttons, with each click changing the amount by 0.1, or set instantly to 250 with the “bet max” option. Spins can be launched via the button or the space bar.

Game Symbols and Payouts

The Big Bass Bonanza slot pays for combinations from 3+ symbols (except for the float) on one of the 10 paylines, counted from left to right. The tables below show the multipliers applied to your stake.

Symbol2345
Floatx0.5x5x20x200
Fishing Rodx3x15x100
Dragonfly / Tackle Boxx2x10x50
Fishx1x5x20
A / K / Q / J / 10x0.5x2.5x10

Big Bass Bonanza: Slot Features

Whether you play Big Bass Bonanza free or for real money, the mechanics revolve around a small set of special symbols:

  • Scatter (fish with a hook): Triggers the free spins feature when 3 or more appear anywhere on the reels. Position doesn’t matter.
  • Wild (fisherman): Appears only during free spins. Substitutes for all symbols except the scatter. Most importantly, it collects the cash values from all fish on screen — the main mechanic of the bonus. The more fish and fishermen land together, the higher the payout.
  • Fish with cash prizes: In the base game, they pay according to the standard table. In free spins, they contain fixed values — x2, x5, x10, x15, x20, x25, x50 and x2000 the stake. These amounts are awarded only if a fisherman appears at the same time. If fish land without a fisherman (or the other way round), no win is paid.

Bonus Choice

The bonus in Big Bass Bonanza comes in at a steady pace — roughly once every 15–20 spins, which is fairly frequent for a high-volatility slot. It starts when scatters land anywhere on the reels:

  • 3 scatters: 10 free spins;
  • 4 scatters: 15 free spins;
  • 5 scatters: 20 free spins.

In free spins, a progression bar appears above the reels. Each fisherman Wild landed is collected into this meter. Every set of four fishermen adds +10 spins and upgrades the collection multiplier in stages: first to x2, then x3, and finally x10. The progression can only reach three levels; after the third retrigger, the bonus does not extend further.

There is also a random extra: if a spin ends with only one fisherman and no fish, dynamite may drop fish in random positions so that the collection still works.

Summary

Big Bass Bonanza is primitive in terms of mechanics, but for medium-high volatility, it still holds up well. A drawback is the lack of a buy feature, yet scatters launch the round fairly often, and once inside the bonus, the gameplay brings real excitement.

Big Bass Bonanza free play mode showcases the slot’s original charm before the series expanded with fresh themes and features. Notably, Big Bass Bonanza 1000 stands out with a boosted max win of 20,000x, while Big Bass Bonanza Megaways offers an expanded grid with up to 46,656 ways to win and cascading reels for bigger win potential.

Thomas Hill | Content Editor
Thomas Hill
28 November 2025, 08:13
Big Bass Bonanza
Provider
Pragmatic Play
Theme
Fishing
Reels × Rows
5x3
Bet Range (£)
0.1 - 250
Free spins
Progressive Jackpot
Mobile friendly
Release year
2020
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