Big Bass Boom Slot
Pragmatic Play certified slot with 97.97% RTP and independently tested high volatility fishing mechanics across 10 fixed paylines
Pragmatic Play certified slot with 97.97% RTP and independently tested high volatility fishing mechanics across 10 fixed paylines
The dynamite symbols are your best mate in this game. When they land during free spins, they explode to reveal cash prizes or additional fish symbols. Don't chase base game wins—save your budget for triggering the bonus round where dynamite can seriously amplify your haul.
The angler only collects when fish symbols are present, but in Boom the multipliers can stack aggressively during free spins. Retriggers become critical since each new batch of spins gives the dynamite more chances to detonate. Patience pays when the feature properly loads up.
With 5000x max win potential, Big Bass Boom is high volatility. You'll face long dry spells between bonus rounds. Set a session limit and stick to stakes that allow at least 100 spins—this game punishes impatient betting and rewards those who can weather the droughts.
The optional ante bet doubles your chance of triggering free spins but increases your stake by 50%. It's not magic—you're simply buying better odds. Only use it if your bankroll can handle the extra cost over extended play, otherwise standard betting works fine.
Finally a Bass game that actually delivers in the bonus! Had three dynamite symbols pop during a retrigger and walked away with 780x my stake. The explosions make it feel properly explosive compared to the older versions. Played at partner casino 2 and had no issues with the feature triggering fairly.
Good fun when it hits but you need serious patience. Went 180 spins before seeing the free games, then got a nice 120x win. Worth playing but manage your bankroll.
Decent enough but nothing special. The dynamite gimmick doesn't always pay off—had two bonus rounds that barely returned 20x total. It's still just another fishing slot at the end of the day.
Absolute waste.
Big Bass Boom suits players who enjoyed the original Bonanza but wanted more punch in the bonus round. The dynamite mechanic adds genuine excitement to free spins, and the 5000x max win—whilst still modest compared to some modern slots—feels achievable when the feature properly ignites. The 96.71% RTP (or 97.97% with ante bet at partner casino 1) sits comfortably in Pragmatic Play's typical range. This works best for medium-stakes recreational punters who appreciate fishing themes and don't mind waiting for the big moment.
However, base game play remains tediously slow, and you'll burn through spins without much happening between bonuses. The dynamite can also whiff completely if fish symbols don't cooperate, leaving you with underwhelming free spin sessions. Remember that RTP is a long-term average—short sessions will likely see losses. This is gambling; only play with money you can afford to lose, and if you feel it's becoming a problem, seek support. Boom delivers solid entertainment when it fires, but it's not revolutionary enough to convert fishing-slot sceptics.
Dynamite symbols can land during free spins and explode to reveal cash prizes or additional fish symbols. When they detonate, they increase the potential for the fisherman to collect bigger values. The feature adds extra volatility to the bonus round compared to standard Big Bass games.
The maximum win is 5000x your stake. This is achieved through collecting fish values with multipliers during free spins, particularly when dynamite symbols contribute additional prizes. Actual results vary—this is the theoretical cap, not a guaranteed outcome.
The ante bet costs 50% extra per spin but doubles your chance of triggering free spins. It also increases the RTP slightly at some partner casinos. Use it only if your bankroll can sustain the higher cost per spin over your session—it doesn't change the fundamental volatility, just the trigger frequency.
Reel Kingdom powered by Pragmatic Play delivers an industry-leading theoretical return across all bet levels from £0.10 to £250.00, ensuring fair long-term player value on every spin.
4 out of 5 Lightning Bolts
Big Bass Boom operates on high volatility mathematics, meaning wins arrive less frequently but deliver significantly larger payouts when they land. The wild collection mechanic during free spins can build progressive multipliers from 1x through 2x and 3x up to a massive 10x on the fourth retrigger level, creating explosive win potential that justifies the higher variance profile.
Every bass fish symbol displays a random cash value ranging from 2x up to a staggering 5000x your total bet. During free spins, wild fisherman symbols collect all money values visible on the screen and multiply them by your current level multiplier. The same wild collection mechanic powers Big Bass Mission Fishin, where progressive multipliers climb to 10x across 10 paylines with 96.50% RTP and high volatility.
2x to 5000x valuesLand three scatter symbols showing the bass leaping from water to win 10 free spins. Four scatters award 15 spins, while five scatters grant 20 spins. Special reels with increased wild and money fish frequency activate during the feature.
10 / 15 / 20 spinsCollect wild fisherman symbols during free spins to retrigger the feature. Every fourth wild collected awards 10 additional spins and increases the money collection multiplier: 2x at level two, 3x at level three, and 10x at level four.
Up to 10x multiplierBefore free spins begin, up to five random modifiers activate: More Fish increases money symbol frequency, More Fisherman adds wilds, enhanced feature triggers, starting from level 2, or gaining two extra spins on every trigger and retrigger.
0 to 5 modifiersEach wild fisherman that lands during free spins collects all money fish values on screen and applies the current multiplier. Collecting every fourth wild retriggers the feature with increased multiplier power, building toward the maximum 10x money collection at level four.
Big Bass Boom operates on a 5-reel, 3-row grid with 10 fixed paylines running left to right from the leftmost reel. The base game features traditional symbol matching, where landing three or more identical symbols on adjacent reels from left to right awards a payout multiplied by your bet per line.
The highest paying symbol is the red monster truck crushing through rocky terrain, delivering 50,000 coins for five of a kind, 5,000 for four, 1,250 for three, and 125 for just two. The brown fishing rod with bronze reel pays 25,000 for five, while the blue dragonfly and red tackle box each pay 12,500 for a full line.
Lower symbols include the colourful bass fish at 5,000 coins for five, purple letters A and K at 2,500, and red-orange Q, green J, and golden 10 symbols ranging from 1,250 coins down to 50 for three of a kind. All pays require matching symbols on adjacent reels starting from reel one, with only the highest win per line being paid.
The bass fish symbols serve double duty as money symbols, displaying random cash values between 2x and 5000x your total bet on every spin. These values only become collectable during the free spins feature when wild fisherman symbols land and gather all visible money amounts.
Landing three or more scatter symbols triggers free spins, but Big Bass Boom includes a unique scatter assist mechanic in the base game. When exactly two scatters land without a third, the reels may respin with scatters moving down one position while other reels spin again, or a fishing hook can pull a reel upward to reveal an additional scatter. A comparable retrigger system drives Christmas Big Bass Bonanza free spins, where multipliers reach 10x and wild collection mechanics operate across the same 5x3 grid with 96.71% RTP.
Big Bass Boom distinguishes itself through the wild collection mechanic where every fisherman symbol gathers all money fish values and multiplies them by your current level. Reaching the fourth retrigger level with a 10x multiplier transforms even modest 10x and 20x fish values into significant wins, while landing a rare 5000x fish at maximum multiplier instantly approaches the 5,000x total bet win cap.
Select your bet amount to see the maximum possible win of 5,000x across all features
Maximum Win Potential
This represents winning 5,000 times your total bet, which can occur through collecting high-value money fish symbols with the 10x multiplier active at level four of the free spins feature. The identical 5,000x ceiling applies in Big Bass 3 Little Fish Jackpot Bonanza, where money symbols scale to 5000x your stake alongside progressive jackpot triggers during high volatility spins.
Landing three or more scatter symbols showing the bass fish leaping from water triggers free spins. Three scatters award 10 free spins, four scatters grant 15 spins, and five scatters deliver 20 free spins. Special reels with increased wild fisherman and money fish symbols become active during the feature, and up to five random modifiers may activate before the round begins.
During free spins, every wild fisherman symbol that lands collects all money fish values visible anywhere on the screen and multiplies them by your current level multiplier. The fisherman symbol itself substitutes for all symbols except scatters to form additional winning combinations. All wilds that appear are collected toward retriggering the feature at higher multiplier levels.
Level one starts at 1x multiplier for money collection. Collecting your fourth wild retriggers the feature with 10 additional spins and increases the multiplier to 2x. The eighth wild collected triggers level three with 3x multiplier and 10 more spins. The twelfth wild activates level four with a massive 10x multiplier and a final 10 spins. The feature cannot retrigger beyond level four.
Before free spins begin, zero to five modifiers randomly activate: More Fish increases money symbol frequency on the reels, More Fisherman adds extra wild symbols, More Dynamites/Hooks/Bazookas increases the chance of these random features triggering during spins, Start From Level 2 begins the round at 2x multiplier, and Plus Two Spins adds two extra spins to the initial award and every retrigger.
The maximum win is capped at 5,000 times your total bet. If your total accumulated win during a free spins round reaches this 5,000x cap, the round immediately ends, the capped win amount is awarded to your balance, and all remaining free spins are forfeited. This applies to the cumulative total of all wins throughout the entire free spins sequence including all retriggers.
Free spins retrigger through the wild collection mechanic rather than landing additional scatter symbols. Every fourth wild fisherman collected during the feature awards 10 additional spins and increases the multiplier level. You can retrigger up to three times, progressing from level one through level two, level three, and finally level four with the 10x multiplier before the feature can no longer retrigger. The predecessor with 96.50% RTP uses the same wild collection system, awarding progressive multipliers up to 10x as fisherman wilds gather money fish values during free spins.