Pragmatic Play · 2024 · medium volatility · free demo

Big Bass Boom

Get ready for a high-octane fishing trip where the catch of the day comes with a bang! Big Bass Boom by Pragmatic Play is a dynamic online slot that takes the beloved fishing theme and supercharges it with explosive features and colossal win potential.

Big Bass Boom facts

RTP
97.97%
Volatility
Medium
Reels
5
Paylines
10
Max win
5,000×
Bet range
0.1 – 250
Released
Game type
Slots
Provider
Pragmatic Play

RTP varies by casino. Studios release the same slot in more than one RTP build and each casino picks which one it runs, so check the RTP in this game's own info screen at the casino where you play.

Categories Aquatic

Facts from the SlotsLaunch games feed, last synced 6 Sep 2026. The rules inside the game take precedence.

Big Bass Boom paytable and rules

Recorded from Big Bass Boom's own information screens while the game ran in demo mode at a licensed casino, 7 September 2026. Symbol values appear exactly as the game prints them, which below means cash amounts at a $2.00 spin. A casino can run a different build of a slot, so check the game's own info screen where you play.

Big Bass Boom symbol payouts, as cash at a $2.00 spin
Symbol 5432
truck $400.00 $40.00 $10.00 $1.00
fishing reel $200.00 $30.00 $6.00
dragonfly $100.00 $20.00 $4.00
tackle box $100.00 $20.00 $4.00
A $20.00 $5.00 $0.40
K $20.00 $5.00 $0.40
Q $10.00 $2.00 $0.40
J $10.00 $2.00 $0.40
10 $10.00 $2.00 $0.40
fishMoney $40.00 $10.00 $2.00
fishermanWild
frog (SCATTER)Scatter

How Big Bass Boom's special symbols work

fish
MONEY SYMBOL: "The fish paying symbols are also MONEY symbols. At every spin, the fish take a random money value which can be won during the FREE SPINS feature. Possible values are: 2x, 5x, 10x, 15x, 20x, 25x, 50x, 100x, 200x, 500x, 1666x, 2500x or 5000x total bet."
fisherman
This is the WILD symbol. It appears on all reels during the FREE SPINS round. Substitutes for all symbols except SCATTER.
frog (SCATTER)
This is the SCATTER symbol. It appears on all reels.

Big Bass Boom features

Money Symbol
The fish paying symbols are also MONEY symbols. At every spin, the fish take a random money value which can be won during the FREE SPINS feature. Possible values are: 2x, 5x, 10x, 15x, 20x, 25x, 50x, 100x, 200x, 500x, 1666x, 2500x or 5000x total bet.
Free Spins
Hit 3 or more SCATTER symbols to trigger the FREE SPINS feature. 5x SCATTER awards 20 free spins 4x SCATTER awards 15 free spins 3x SCATTER awards 10 free spins In the base game whenever 2 SCATTER symbols hit without a third, there is a chance for another one to be brought onto the screen by a random feature: - Randomly, if the SCATTERS on the screen can move down one position without leaving the reel area, a respin is triggered where the reels with SCATTERS move one position down and the reels without SCATTERS respin. - Randomly, a hook can pull one of the reels up to reveal another SCATTER. Before the round starts, 0 to 5 modifiers that apply to the subsequent round are randomly selected: - MORE FISH - More fish symbols are present on the reel strips during the subsequent free spins round - MORE FISHERMAN - More WILD symbols are present on the reel strips during the subsequent free spins round - MORE DYNAMITES, HOOKS AND BAZOOKAS - During the round, the chance to hit dynamite, hook or bazooka spin feature is increased. - START FROM LEVEL 2 - The round starts from level 2 in the progressive feature. - +2 SPINS - The subsequent round starts with 2 more free spins from the beginning and 2 more spins are added to every retrigger.
Free Spins (WILD collection & retrigger)
During the FREE SPINS feature each WILD symbol also collects all the values from MONEY symbols on the screen. All the WILD symbols that hit during the feature are collected until the end of the round. Every 4th WILD symbol collected retriggers the feature, awards 10 more free spins and the multiplier for MONEY symbol collection increases to 2x for the second level, 3x for the third level and 10x for the fourth level. The retriggered spins are played after the previous batch of free spins ends. The multiplier applies to the retriggered spins. After the fourth level, the feature cannot be retriggered anymore. Randomly, when there are fisherman symbols on the screen but no fish, at the end of a free spin, fish MONEY symbols can appear in random positions via the dynamite spin feature. Randomly, when there are fish symbols on the screen but no fisherman, at the end of a free spin, a hook will appear pulling a random reel up to bring fisherman symbols onto the screen. Also randomly, when there are fisherman symbols on the screen but no fish, at the end of a free spin, a bazooka animation can appear and change all the symbols from the screen, except for fisherman symbols to something else. Special reels are in play during the feature.
Big Bass Boom rules, as the game states them

All symbols pay from left to right on adjacent reels starting from the leftmost reel.

Medium volatility games pay out steadily and the range of pays varies from low to very high.

All symbols pay from left to right on selected paylines.

All wins are multiplied by bet per line.

All values are expressed as actual wins in coins.

Only the highest win is paid per line.

When winning on multiple paylines, all wins are added to the total win.

p04.png: paylines diagram numbered 1 to 10, no additional text

SPACE and ENTER buttons on the keyboard can be used to start and stop the spin.

Malfunction voids all pays and plays.

Click the + or - buttons to change the bet value and open the bet menu.

Select the bet you want to use in the game.

Press the SPIN button to play.

opens the SETTINGS menu that contains settings which affect the way the game is being played.

- cycles through spin speed settings, normal speed, quick spin and turbo spin.

- starts the HYPERPLAY feature.

toggles sound and music on and off

opens the Information page

Free Demo

Big Bass Boom

by Pragmatic Play

18+ | T&Cs Apply | Gamble Responsibly

Last updated: Sep 2, 2026
Provider: Pragmatic Play RTP: 97.97% Volatility: Medium Max Win: 5,000×
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Slot Review

Big Bass Boom Overview

Big Bass Boom is a medium volatility slot by Pragmatic Play with an RTP of 97.97% and a maximum win of 5,000×. This game features Fixed paylines across 5 reels. Play Big Bass Boom for free on Slottomat, compare the core stats quickly, and browse trusted slot offers available in your market.


Explore the Explosive Action of Big Bass Boom


Game Overview & Theme


Big Bass Boom immerses you in a colourful, cartoonish underwater world brimming with color and energy. The 5x5 game grid is set against a sunny lake backdrop, complete with lily pads and reeds. The symbols are a cheerful mix of classic slot icons like bells, diamonds, and BARs, alongside thematic lures and fishing hats, all rendered in a bright, engaging style. The real stars, however, are the animated fisherman and the various bass fish that trigger the game's exciting features. The soundtrack is an upbeat, adventurous tune that perfectly complements the explosive action on the reels, creating an atmosphere that is both fun and intensely engaging.

How to Play Big Bass Boom: Rules & Betting


Big Bass Boom is straightforward to play, even with its innovative mechanics. Wins are formed by landing clusters of 5 or more matching symbols horizontally or vertically adjacent to each other. There are no traditional paylines. The game features a fixed betting range, allowing you to choose a total bet that suits your style, from a minimum of $0.10 up to a maximum of $250 per spin, making it accessible for casual players and high-rollers alike. After a winning cluster hits, the symbols explode and disappear, triggering the Cascading Reels feature. New symbols tumble down from above to fill the empty spaces, potentially creating new winning clusters in a single spin. This process continues until no new wins are formed.

Symbols, Payouts, and the Explosive Features


The lower-value symbols are the classic playing card icons (9-A), while the higher-value symbols are the thematic lures, hats, bells, and diamonds. The Wild symbol, represented by a glowing golden 'WILD,' substitutes for all regular symbols to help form winning clusters. The real depth of Big Bass Boom lies in its two special fish symbols and the modifiers they bring:



  • Bass Fish Symbols: These come in three sizes (1x1, 2x2, and 3x3). When a Bass Fish symbol is part of a winning cluster, it explodes and collects the values of all regular symbols in that win. This collected value is then awarded as a cash prize.

  • Fisherman Symbol: This symbol acts as a collector. When it lands on the grid, it collects the total value from all Bass Fish symbols that are currently visible, awarding that sum as a cash prize.

  • Cascading Reels: As mentioned, every winning cluster explodes, allowing new symbols to drop in and create potential chain reactions for multiple wins from a single spin.

Triggering the Free Spins Bonus Round


The Free Spins feature is where Big Bass Boom truly lives up to its name. To trigger it, you need to fill the entire 5x5 grid with Bass Fish symbols. This is achieved through the cascading reels and the special properties of the fish. Once the grid is full, you are awarded 10 Free Spins. During the Free Spins round, the Fisherman symbol becomes sticky and remains in its position for the entire duration of the bonus. Also, every Bass Fish symbol that lands has a multiplier attached to it (1x, 2x, 3x, 5x, or 10x). When the Fisherman collects from a Bass Fish, he also collects its multiplier, which is then applied to the total collected value for that spin. Multipliers can accumulate across spins, leading to potentially astronomical wins.

RTP, Volatility, and Max Win Potential


Big Bass Boom is a slot that plays for high stakes. Its theoretical Return to Player (RTP) of 97.97% is significantly above the industry average, indicating a favorable long-term payout model. However, this is perfectly paired with a Very High Volatility rating. This means wins may not land frequently, but when they do, they have the potential to be enormous. The game is built around those explosive moments in the base game and the multiplier-fueled frenzy of the Free Spins round. Players should be prepared for periods of dry spells, but the anticipation for a single spin that can fill the grid and unlock the bonus is a huge part of the thrill.

Big Bass Boom vs. Other Pragmatic Play Hits


If you enjoy the cluster-pays and explosive action of Big Bass Boom, you'll likely love other high-energy slots from Pragmatic Play's extensive portfolio. The most obvious relative is the iconic Big Bass Bonanza 1000, which uses a more traditional fishing theme with a Money Symbol mechanic. For similar high-volatility, feature-rich gameplay, check out the candy-coated chaos of Novibet Sugar Rush 1000 or the jewel-encrusted excitement of Money Roll. Fans of colourful animal themes might also enjoy Dragon Kingdom or the charming cluster-pays of Tiny Toads.

Tips for Playing Big Bass Boom Demo


Playing the free demo version of Big Bass Boom is the perfect way to understand its unique mechanics without any risk. Use this opportunity to get a feel for the frequency of the Bass Fish symbols and the Fisherman. Pay close attention to how the cascades work and how the grid fills up. Since it's a very high volatility game, the demo will show you that patience is key; the goal is to hit that one transformative spin that triggers the Free Spins.

Where to Play Big Bass Boom for Free


It’s the ideal platform to learn the ropes, test strategies, and simply enjoy the game's exciting features purely for fun. Explore our vast library to find other thematic adventures, like our collection of Crypto Slots or the epic Viking Slots. If you're looking for a broad selection of free demo slots akin to other popular platforms, our

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FAQ

Common Questions About Big Bass Boom

Direct answers to the questions players usually ask before trying a slot.

Big Bass Boom has a high Return to Player (RTP) of 97.97%. The game is classified as having a Medium volatility level.
Yes, you can try the Big Bass Boom demo version for free. This allows you to experience the game at your own pace.
The betting range for Big Bass Boom is flexible, from a minimum of 0.1 up to a maximum of 250 per spin. The game uses a fixed paylines structure.
Big Bass Boom is developed by the well-known provider Pragmatic Play. They are a leading creator of popular online slot games.
Yes, like other Pragmatic Play slots such as Big Bass Splash, this game is fully optimized for mobile play. You can enjoy it on smartphones and tablets.

Big Bass Boom is classified as a Medium Volatility slot. Medium volatility games pay out steadily and the range of pays varies from low to very high.

All symbols pay from left to right on adjacent reels starting from the leftmost reel, across the game's 10 paylines. During the FREE SPINS feature each WILD fisherman symbol collects all the values from the fish MONEY symbols on the screen. The main goal is to land 3 or more SCATTER symbols to trigger the Free Spins bonus round.