Bigger Bass Bonanza Slot Review

Bigger Bass Bonanza is the sequel to one of the most recognisable fishing-themed slots on the market, developed by Reel Kingdom under the Pragmatic Play umbrella. Released in September 2021, the game expands the original 3-row grid to a 5-reel, 4-row layout with 12 fixed paylines, doubling the maximum win potential to 4,000x the total bet. The RTP remains at 96.71%, paired with very high volatility rated 5 out of 5.

Play Bigger Bass Bonanza

The slot is set against a neon-lit Miami-style backdrop with an 80s-inspired soundtrack. On the reels, a familiar bearded fisherman returns, this time wearing a Hawaiian shirt and sunglasses. The core mechanic revolves around Money symbols and a Free Spins round where the Wild fisherman collects cash values from fish on the screen, with escalating multipliers through retriggers.

Key features of Bigger Bass Bonanza at a glance:

Symbols and Paytable

Bigger Bass Bonanza splits its symbol set into two groups. The lower-paying symbols are the standard card royals: 10, J, Q, K and A. All five of these pay equally, awarding R10 for a five-of-a-kind combination at a R1 bet. The higher-paying group consists of fishing-themed symbols, each with its own value tier.

The fishing boat is the most valuable regular symbol, paying R200 for five on a payline and also being the only symbol that pays for just two matching icons. The fishing rod comes next at R100 for five, followed by the fishing lure and tackle box, which share the same payout of R50 for five. Fish Money symbols pay R1 for three and R5 for four, but landing five on a payline awards the total monetary value displayed on them, which can be significant.

The full paytable at a R1 bet:

Two special symbols complete the set. The Wild is the fisherman character, who only appears during the Free Spins round and substitutes for all symbols except the Scatter. The Scatter is a bass biting a hook and can land on all five reels. All wins are formed from left to right on adjacent reels starting from the leftmost position, and only the highest win per line is paid.

Paylines and Winning Rules

The game uses 12 fixed paylines that are always active. This is an increase from the original Big Bass Bonanza, which had 10 paylines on a 3-row grid. The two additional lines are a direct result of the extra row, giving more combinations to work with per spin. All wins are multiplied by the bet per line, and when a spin produces wins on multiple paylines, those wins are added together.

Since paylines are fixed, the total bet is always distributed across all 12 lines. At the minimum bet of R0.12, each line receives R0.01. At a R1 total bet, the stake per line is approximately R0.083. Only the highest win is paid per line, so if a payline could technically form two winning combinations, the more valuable one takes priority.

Free Spins and Bonus Mechanics

The Free Spins feature is where the slot reaches its full potential. The entire round is built around the interaction between Money symbols, the Wild fisherman and a retrigger system tied to a collection meter displayed above the reels.

Money symbols appear on the reels during every spin, both in the base game and during Free Spins. Each Money symbol displays a random cash value drawn from the following multipliers of the total bet: 2x, 5x, 10x, 15x, 20x, 25x, 50x and 4,000x. In the base game, the fish-themed high-paying symbols also function as Money symbols, carrying a random value that can only be collected during the Free Spins round.

Landing 3, 4 or 5 Scatter symbols anywhere on the reels triggers the feature. Three Scatters award 10 free spins, four award 15, and five award 20.

During Free Spins, the game switches to special reels. The Wild fisherman can now appear on all reels, and each Wild that lands collects the values of every Money symbol visible on the screen at that moment. The collected total is added to the round's running winnings. All Wild symbols that land during the entire feature are tracked on a meter at the top of the screen.

Every 4th Wild symbol collected activates a retrigger. Each retrigger awards an additional 10 free spins and increases the multiplier applied to Money symbol collection for the new batch of spins. The first retrigger applies a 2x multiplier, the second raises it to 3x, and the third pushes it to 10x. After the third retrigger, no further retriggers are possible, which means the maximum number of retriggers is three and the highest collection multiplier is 10x.

There is also a random mechanic tied to the feature. When only one Wild symbol is present on the screen at the end of a free spin, fish Money symbols can randomly appear in additional positions. This serves as a safety net that increases the chance of meaningful payouts in rounds where Wilds are scarce.

The maximum win for the entire round is capped at 4,000x the total bet. If the running total reaches that cap during a Free Spins round, the feature ends immediately and the win is awarded, with any remaining free spins forfeited. At a R1 bet, that translates to a maximum payout of R4,000. The ability to test the Free Spins mechanics before committing real funds is available through the Bigger Bass Bonanza demo, which provides the full feature set in a risk-free format.

Payout Mechanics and Math Profile

Bigger Bass Bonanza operates on a 5×4 grid with 12 fixed paylines, which creates a relatively lean payout surface compared to modern slots with hundreds or thousands of ways to win. With only 12 lines across 20 symbol positions, roughly 60% of all symbol positions on any given spin contribute to at least one payline. This means that not every visible symbol is "active" for payout purposes, and edge positions on rows 1 and 4 are covered by fewer lines than central positions.

The core mathematical driver of the slot is not the base game payline structure but the Free Spins collection mechanic. Base game wins on 12 lines with standard symbols provide modest returns, and the RTP contribution from the base game is proportionally smaller. The bulk of the 96.71% RTP is concentrated in the Free Spins feature, where the Wild collection mechanic converts Money symbol values into payouts that bypass the payline system entirely.

The retrigger multiplier progression follows a non-linear path: 1x → 2x → 3x → 10x. The jump from 3x to 10x on the third retrigger is the most impactful step and represents the primary high-variance event. Reaching the third retrigger requires exactly 12 Wild symbols to land across the entire feature, which determines the payout ceiling. Each Wild simultaneously serves two functions: it collects Money values and it advances the retrigger meter. This dual role creates a compounding effect where more Wilds mean both more collection events and higher multipliers on those events.

The Money symbol value distribution is heavily skewed toward the lower end. Values of 2x and 5x appear most frequently, while the 4,000x fish is extremely rare. Because one 4,000x Money symbol combined with a 10x retrigger multiplier could theoretically produce a 40,000x collection from a single Wild, the game enforces a hard cap at 4,000x total for the entire round. This cap prevents the mathematical outliers from exceeding the designed risk envelope.