Video slot · Pragmatic Play

Big Bass Bonanza UK

Spin five reels for fish symbols, land three boats for free spins and let the fisherman wild reel in their values.

Big Bass Bonanza
RTP 96.71%
Demo available
Mobile, no download

Big Bass Bonanza at a glance

Game typeVideo slot with a fishing theme
ProviderPragmatic Play
Reels and paylines5 reels, 3 rows, 10 paylines
RTP96.71%
VolatilityMedium-high to high
Min bet£0.10 per spin
Max bet£250 per spin
Bonus feature10 free spins for 3 or more boat scatters, with the fisherman wild collecting fish values and re-trigger multipliers
FairnessRandom number generator (RNG)
DevicesDesktop, Android and iOS in the browser
Big Bass Bonanza - main content

What is Big Bass Bonanza?

Big Bass Bonanza is a video slot from Pragmatic Play built around a day of fishing on a lake. It has 5 reels, 3 rows and 10 paylines, a return to player of 96.71% and stakes from £0.10 to £250 a spin. You spin, match symbols along the paylines and wait for three fishing boats to open the free spins round.

The base game is simple. Line wins come from fish, a fishing rod, a tackle box and the card royals 10, J, Q, K and A. The real draw of Big Bass Bonanza is the bonus round: three or more boat scatters anywhere on the reels award 10 free spins, and during those spins the fisherman wild collects the cash values shown on the fish in view. The more fishermen land, the more fish get reeled in, and multipliers raise the collected amounts.

No skill changes the result. Every spin is decided by a random number generator, so no stake pattern or timing makes the boats or the fisherman land more often. What you choose is the stake, how long a session lasts and when to stop. This guide explains Big Bass Bonanza for players in the UK, with every example in pounds.

The core mechanic: fish and the fisherman

In the base game the fisherman works as a wild: he stands in for other symbols to complete a payline. In the free spins he takes on a second job. Fish symbols carry money values, and when a fisherman lands, he collects the value of every fish on screen and adds it to your win. Fishermen gathered during the round feed the re-trigger feature, which brings multipliers for later collections.

Fairness: how a spin is decided

Big Bass Bonanza uses a random number generator (RNG). Each spin is calculated the moment you press Spin, independently of the spins before it, and the RTP of 96.71% is the long-term average of that process. A licensed casino runs the studio's certified version of the game.

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Big Bass Bonanza features: RTP, multipliers and bets

RTP and volatility

The RTP of Big Bass Bonanza is 96.71%. Over a very large number of spins the game returns an average of £96.71 for every £100 staked, and the remaining £3.29 is the house edge. That average says little about one session: a hundred spins can end well above or well below it.

Volatility describes how the return is spread. Big Bass Bonanza sits at medium-high to high volatility: many spins pay nothing or a small line win, while a large share of the return comes from the free spins. Expect quiet stretches and size your stake so the budget lasts long enough to reach the bonus round.

Multipliers and the biggest wins

Line wins in the base game are modest. The card royals pay the least, the rod, the tackle box and the fish pay more, and the largest fish pays the most. The bigger results in Big Bass Bonanza come from the free spins, where fish values and multipliers add up.

Here is an example with round illustrative values, not the game's paytable. You play at £1 a spin and trigger the free spins. On one spin a fisherman lands next to three fish worth £2, £5 and £10, and he collects £17. Later in the round, after a re-trigger, a ×2 multiplier applies, and the same three fish would pay £34. Every fisherman that lands collects again, so the more fishermen you get, the more fish you reel in – which is why one strong bonus round can outweigh a long run of base game spins.

Bet limits

Stakes in Big Bass Bonanza run from £0.10 to £250 a spin. The bet is built from coins across the 10 paylines: 1 to 10 coins per line, with a coin size from £0.01 to £2.50. One coin of £0.01 on each of the 10 lines gives the minimum of £0.10; ten coins of £2.50 on each line give the maximum of £250. The casino decides which part of that range it offers.

How much of your budget to put on each spin is a bankroll question rather than a feature of the game. The Big Bass Bonanza strategy guide works it through with examples in pounds.

How to play Big Bass Bonanza

A spin of Big Bass Bonanza takes four steps, and the controls are the same on desktop and mobile.

Step 1 – Set your bet

Open the bet menu and choose your stake, from £0.10 to £250. Pick an amount that lets your budget cover a long run of spins, because the free spins can take a while to arrive in a high-volatility slot.

Step 2 – Spin the reels

Press Spin. The five reels stop one after another, and matching symbols on any of the 10 paylines pay according to the paytable. Line wins are added to your balance straight away.

Step 3 – Watch for wilds and scatters

The fisherman wild replaces other symbols to complete a line. The fishing boat is the scatter: it counts wherever it lands, and three or more on the same spin start the bonus round.

Step 4 – Play the free spins

Three or more boats give you 10 free spins at the stake that triggered them. In this round the fisherman collects the values of the fish on screen, and re-trigger multipliers raise later collections. When the spins end, the total goes to your balance. The game works the same way in a phone browser – the Big Bass Bonanza app page shows how to set it up on Android and iOS.

About Pragmatic Play

Pragmatic Play is the studio behind Big Bass Bonanza. It makes video slots and other casino games, and the fishing theme of this one proved popular enough to grow into a whole series of Big Bass titles. The studio's slots share a recognisable style: clear reels, one main bonus feature and a paytable that explains every symbol.

Other games from Pragmatic Play

Besides the Big Bass Bonanza sequels, such as Bigger Bass Bonanza and Big Bass Splash, the studio's catalogue includes Sweet Bonanza, Gates of Olympus, The Dog House and Wolf Gold. Each has its own theme and bonus round, and the RTP and volatility differ from game to game, so a plan that suits one slot may need adjusting for another.

How the studio's games are tested and distributed

Pragmatic Play supplies its games to licensed online casinos rather than running a casino of its own. Before a slot goes live, its random number generator and payout maths are tested by independent laboratories, and casinos receive the certified game files. The rules, the paytable and the RTP you see in the game's information screen come from that version.

FAQ

Big Bass Bonanza FAQ

What is Big Bass Bonanza?

A fishing-themed video slot from Pragmatic Play with 5 reels, 10 paylines and a free spins round in which a fisherman wild collects the values of fish symbols.

How do you play Big Bass Bonanza?

Set a stake between £0.10 and £250, press Spin and match symbols on the 10 paylines. Three or more fishing boat scatters start 10 free spins.

Is Big Bass Bonanza legit?

It is a slot made by Pragmatic Play, an established studio, and every spin is decided by a random number generator. Licensed casinos run the studio's certified version.

Can I play Big Bass Bonanza for free?

Yes. The demo uses virtual credits with the same rules, paytable and RTP as the real-money game. Demo winnings cannot be withdrawn.

What is the RTP of Big Bass Bonanza?

96.71%. Over a very large number of spins the game returns on average £96.71 per £100 staked; a single session can end far from that figure.

What is the biggest win in Big Bass Bonanza?

The largest payouts come from the free spins, where the fisherman collects the values of the fish on screen and re-trigger multipliers raise them. In the base game the largest fish symbol pays the most.

Can I play Big Bass Bonanza on my phone?

Yes. It runs in the mobile browser on Android and iOS with the same rules as on desktop, and you can add the casino site to your home screen.

Last updated 2026-11-01