TonyBet
12,700+ Casino Games
Welcome bonus
up to €1,050 + 150 free spins
LicenceEU/UK · GRAI
Wagering30x
Payout time12 hours
Games12,700+
Big Bass Bonanza is the Pragmatic Play and Reel Kingdom fishing slot that started the series, with free spins where the fisherman collects the fish values. Try it free on this page.
Up for real wins?
Play Big Bass Bonanza for real money at TonyBet and check its welcome offer.
Specs
Our highest-rated Irish casinos carrying Pragmatic Play slots, ranked by rating.
up to €1,050 + 150 free spins
Up to €1,000 + 125 Free Spins
50 free spins
Big Bass Bonanza is a 5x3, 10-payline fishing slot from Reel Kingdom and Pragmatic Play, released on 14 December 2020, with 96.71% RTP, low volatility by its own rules and a 2,100x max win. In the free spins, the fisherman collects the fish values.
You play on 5 reels, 3 rows and 10 fixed paylines. You win with 3 or more matching symbols (2 for the float), from left to right on neighbouring reels, starting from the leftmost reel. Only the highest win on each line is paid, and wins on different lines are added together.
In the demo the bet runs from 0.10 to 250 per spin; a casino sets its own range in euro.
The symbols are cards (10, J, Q, K, A) and fishing gear: fish, tackle boxes, dragonflies, rods and floats. The base game is a simple line slot. What gives it character is the free spins, where the fish values are collected, the biggest prize in the game.
Pays are multiples of your total bet for 3, 4 or 5 matching symbols on a line. The game's table shows cash at the bet on screen; here it is converted to multiples of the bet.
Pays in times your total bet
Float
The top pay: 200 times your bet for 5 on a line, which is €40 on a 20 cent spin. Two floats already pay 0.5x.
Fishing rod
Pays half of what the float does at 5 on a line.
Tackle box
Pays the same as the dragonfly: 50 times for 5.
Dragonfly
Fish
Also the money symbol: in the free spins it takes a value at random.
A
K
Q
J
10
Fisherman (wild)
Substitutes for every symbol except the scatter. In the free spins it collects the values of all the fish on screen.
Scatter
3, 4 or 5 open 10, 15 or 20 free spins.
In the base game the small pays return less than you staked: on a €1 bet, three cards on a line pay 50 cent. The rods and floats are what move the balance.
3, 4 or 5 scatters anywhere open 10, 15 or 20 free spins. During the round the fisherman wild appears on every reel.
On every spin the fish take a random value of 2x, 5x, 10x, 15x, 20x, 25x, 50x or 2,000x your total bet, and these are only paid in the free spins. When a fisherman lands, he collects the values of all the fish on screen. On a €1 bet, if he collects fish worth 2x, 5x and 10x, that adds up to 17x, so you take €17.
Also, if one fisherman is left on screen at the end of a spin, fish can appear in random positions.
Every fourth fisherman collected retriggers the round with 10 more spins and applies a multiplier to what he collects: 2x on the first retrigger, 3x on the second and 10x on the third. After the third it cannot retrigger, so the most you can get is 50 free spins: 20 to start and 30 from retriggers.
Pragmatic Play lists a 96.71% RTP: over millions of spins the game returns €96.71 of every €100 staked. In one session, anything can happen. Reviewers say some casinos run versions at 95.67% or 94.6%; with the lowest you would lose about €2 more per €100 in the long run. The percentage in use is on the game's info screen.
On volatility the sources disagree. The game's rules screen labels it low, Pragmatic does not publish a rating on its page, and reviewers put it between medium-high and high. What the paytable makes clear is that the big prize lives in the bonus, and the base game pays little.
The max win is 2,100 times the bet, according to the rules: €420 on a 20 cent spin and €2,100 on €1. If a bonus round reaches that cap, it ends at once and any spins left are lost.
It is a fishing slot with money-value fish, set under the water. It belongs to the cartoon slots style, with balloon-shaped card letters and the fisherman as the wild. It is the game that started a whole series of fishing slots.
The demo does not show a casino's bonus terms or the restrictions at your casino, and it uses credits, not euro.
Pragmatic Play distributes the Big Bass series, which runs to more than 40 games in our library (November 2026). These are the versions closest to the original, and what changes:
Pragmatic Play
Pragmatic Play
Pragmatic Play
Pragmatic Play
Pragmatic Play
Big Bass Bonanza is one of the slots Irish players look up: about 180 searches a month in Ireland on Google for its name with "slot", "slots" or "demo" (November 2026), 140 of them for the demo. In our check of Irish-facing casino lobbies in early November 2026 it was fourth in PlayOJO's Popular Games row, and it was in BetVictor's casino home page rows too.
With real money the game is the same, but wins become cashable and the casino picks the RTP version it runs, so read the info screen. A bonus can add wagering terms that apply to what you win.
Ireland's licensing is changing. Under the Gambling Regulation Act 2024, the GRAI has licensed remote betting since 1 July 2026, but licences for online gaming are only due to open from 2027. Until then, check which licence a casino holds before you deposit. The casinos on this page come from our Irish casino rankings.
Real-money play is for adults 18+ only. Because most of the prize sits in the bonus, a run without it can eat your balance: set a limit before you start. If it stops being fun, GamblingCare.ie runs a free 24-hour helpline on 1800 936 725, and our responsible gambling page lists more help.
Yes, the demo on this page is free: practice credits, no account and no deposit, and nothing you win can be cashed out. To play for euro, see the real-money casinos we rank for Ireland.
96.71%, the figure in the game's own rules from Pragmatic Play. Reviewers report that some casinos run lower versions, 95.67% and 94.6%, so read the info screen before you stake anything.
Not by its own label: the rules screen calls it low volatility, which is what our fact panel shows. Reviewers rate it medium-high to high and Pragmatic does not publish a rating on its page. For comparison, the sequel Big Bass Splash is labelled medium in its rules.
2,100 times your stake: €420 on a 20 cent spin, or €2,100 on a €1 spin. The fish are worth up to 2,000x, but only in the free spins.
Land 3, 4 or 5 scatters to win 10, 15 or 20 free spins. In the round, the fisherman collects the fish values on screen, and every fourth one adds 10 spins with a multiplier.
No: the demo screen and the rules we captured show no bonus buy, so the free spins have to come from 3 or more scatters. If you want a buy option, look at bonus buy slots instead.
Reel Kingdom developed it and Pragmatic Play distributes it. It came out on 14 December 2020 and opened a series of more than 40 games.
