Bigger Bass Bonanza slot

What makes the Bigger Bass Bonanza slot machine ‘bigger’

Pragmatic Play describes the game as a ‘4×5 edition of the classic fishing slot’. In practice that means the original Big Bass Bonanza grid of five reels and three rows gains a fourth row, giving 20 visible positions instead of 15. The number of paylines rises from 10 to 12, and the published max win goes from 2,100× to 4,000×.

The core idea is unchanged. Fish symbols can carry cash values, and during free spins the fisherman wild collects every fish value on screen. Reel Kingdom built the whole Big Bass series on this collect mechanic, and Bigger Bass Bonanza is one of its earliest sequels. Our side-by-side Big Bass Bonanza vs Bigger Bass Bonanza page goes through each difference.

How the base game works

Each paid spin is settled on 12 fixed paylines. Matching symbols from the leftmost reel pay according to the paytable, with card royals as the low-value symbols and fishing gear as the higher ones. Fish symbols showing cash values can land in the base game, but on their own they do nothing; their job is to be collected later.

The base game's other purpose is to land scatter symbols. Three or more anywhere on the grid start the free spins round. Because most of the game's value is held back for that round, the base game usually returns noticeably less than the headline RTP, which is normal for a high-volatility fishing slot.

Line bet arithmetic

With 12 lines, a 12p stake is 1p per line and a £1.20 stake is 10p per line. Many casinos also offer round-number stakes such as 10p, 20p or £1, in which case the line bet is a fraction of a penny; the paytable converts everything to pounds for you.

Bigger Bass Bonanza free spins explained

The free spins round is where the game's character comes through. According to Pragmatic Play's game listing (opens in a new tab), the round works like this:

1. Land 3, 4 or 5 scatters to win 10, 15 or 20 free spins.
2. During the spins, fish symbols with cash values can land anywhere on the 5×4 grid.
3. When a fisherman wild lands, it collects the value of every fish visible on screen.
4. Every wild is counted. The fourth wild retriggers the round with 10 more spins and a 2× multiplier on collected values.
5. The eighth wild adds 10 more spins and raises the multiplier to 3×.
6. The twelfth wild adds 10 more spins and the final 10× multiplier.

This is a cash collect feature combined with a free spins retrigger and a progressive multiplier. The multiplier only applies to values collected after each level is reached, so a run that reaches 10× late in the round can still end modestly.

A worked collect example (illustrative values)

Suppose you stake 50p and, early in the round, a fisherman lands with three fish worth £1, £2.50 and £5 on screen. He collects £8.50. Later, after twelve wilds, the 10× multiplier is active and a fisherman lands with fish worth £1 and £2: that collect pays (£1 + £2) × 10 = £30. These fish values are made up to show the arithmetic; real values come from the game's maths and vary from spin to spin.

Bigger Bass Bonanza RTP and versions

The Bigger Bass Bonanza RTP is 96.71% in its top version, matching the figure Pragmatic Play publishes. Two lower versions, 95.67% and 94.62%, also exist, and casinos choose which to run. The table shows what that choice means in pounds.

200 spins at 50p is £100 staked, so the last two columns match. Moving from the top version to the lowest increases the average cost by about 64%. To see which you have, open the help screen and search for the return to player line, as shown in our guide on how to find a slot's RTP.

Bigger Bass Bonanza max win at UK stakes

The Bigger Bass Bonanza max win is 4,000 times the stake. Reaching it needs the free spins round to run long, hit the higher multipliers and collect big fish values at the right moments, so it is a theoretical ceiling rather than something most players will see.

Those stake caps come from the online slot stake limits in force since April and May 2025.

Bigger Bass Bonanza volatility and budgeting

High volatility plus a feature-led design means the most common experience is a steady decline in balance punctuated by occasional free spins rounds of very different value. Some rounds pay less than the stake that triggered them; a few pay a lot.

A sensible plan is to choose a stake that gives at least 200 base-game spins from your budget and to decide in advance what you will do after a feature, win or lose. At the fastest pace allowed in the UK (2.5 seconds per spin) 200 spins take a little over eight minutes, so time-based limits are useful too. Our slot session limits guide shows how to set them.

The UK version: no autoplay and no bonus buy

At UK-licensed casinos, Bigger Bass Bonanza follows the slot game design rules introduced on 31 October 2021: no autoplay, no turbo or slam-stop, a minimum 2.5-second game cycle, a visible net position, and no celebration of returns at or below the stake. There is also no option to buy the free spins round, because slots supplied to Great Britain do not include a feature buy.

Bigger Bass Bonanza demo

A Bigger Bass Bonanza demo is a quick way to see the fisherman collect and the multiplier ladder before staking money. In the UK, free demo play is offered only after age verification. Remember that the free spins round is rare, so a short demo may not show it at all; that tells you nothing about the real game. See our demo slots vs real-money slots comparison.

Other Big Bass slots and similar fishing games

The series has grown into dozens of titles. Close relatives include Big Bass Splash, which raises the ceiling to 5,000×, Big Bass Bonanza Megaways, and Big Bass Bonanza 1000, whose max win reaches 20,000×. Outside the series, Fishin' Frenzy by Blueprint uses a similar fisherman idea at medium volatility.

Browse the full set on our fishing slot machines page, or read about the fisherman symbol and how it became a genre of its own.

Bigger Bass Bonanza myths

• ‘Lots of fish on screen means the fisherman is about to land.’ The RNG decides each spin independently; fish showing up does not summon a wild.
• ‘Three wilds means the retrigger is close.’ The counter shows progress within the round, but the next wild is no more likely because you have three.
• ‘The game pays better after a dry run.’ There is no memory of past spins; see do slot machines have patterns.
• ‘Higher stakes trigger free spins more often.’ The trigger chance is identical at every stake.

Is Bigger Bass Bonanza worth playing?

Where to play Bigger Bass Bonanza in the UK

Be careful with the names here. PlayOJO's welcome offer gives new UK customers (excluding Northern Ireland) 80 free spins at 10p each on the original Big Bass Bonanza, not on Bigger Bass Bonanza, after a first deposit of at least £10, with no wagering on winnings. PlayOJO is run by Skill On Net Limited, whose Gambling Commission register entry (opens in a new tab) you can check. See our Big Bass Bonanza free spins page for the details.

Coral (bet £10 on slots for 100 free spins) and Ladbrokes (play £10 for up to 500 free spins over 10 days) give 10p spins on selected games, which may or may not include this one. Search each casino's lobby for Bigger Bass Bonanza, as availability changes. All offers are 18+ for new customers and terms apply. If you need support, the National Gambling Helpline (opens in a new tab) is free on 0808 8020 133.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.