The engine pairs tumbling wins with the collect mechanic that made the series popular. Each reel can show a different number of symbols per spin, and an extra sliding reel on top feeds the ways count. In the base game it is a standard Megaways slot with cascades; in the Free Spins it becomes a collect game, where money-symbol fish stay on the board and the Fisherman scoops up their values. The summary below sets out the core numbers before we walk through how each part works.
| Feature | Details |
| Provider | Reel Kingdom (Pragmatic Play) |
| Release date | November 2021 |
| RTP | 96.70% full version (operator variants 95.66% / 94.62%) |
| Volatility | High (5/5) |
| Max win | 4,000x the stake |
| Engine | Megaways - 6 reels, up to 46,656 ways |
| Min bet | €0.20 |
| Max bet | Up to €100 (€1 cap on German-licensed sites) |
| Wild | Fisherman - collects money symbols in Free Spins |
| Scatter | Triggers Free Spins |
| Free Spins | Yes - 10 to 25 spins, multipliers up to 10x |
| Bonus Buy | Yes globally - not offered under the German licence |
| Mobile | Full support - iOS and Android (HTML5) |
How to play Big Bass Bonanza Megaways
Set your total stake with the bet controls under the reels, from €0.20 upward. There are no fixed paylines - wins form whenever three or more matching symbols land on adjacent reels from the left, in any row position. Because the number of symbols per reel changes each spin, the ways count is recalculated every time, up to 46,656 at full expansion, with an extra sliding reel above the main grid adding symbols.
On German-licensed sites the stake is capped at €1 per spin, autoplay is switched off and a minimum spin time applies under the current gambling treaty, so the pace is slower than on the global version, where the bet runs up to €100. Every win triggers a tumble, and the scatter is the symbol to watch - three of them open the Free Spins where the collect mechanic lives.
Big Bass Bonanza Megaways rules
The paytable is led by fishing-themed high symbols - the tackle box, reel and float - with the card royals filling the lower tier. The money-symbol fish only pay in the Free Spins. Values below show the shape of the table; exact figures can vary between casino builds, so check the in-game paytable before you play.
Symbols and payouts
| Symbol | Tier | Payout |
| Tackle box | High (premium) | Top payout |
| Fishing reel | High | High payout |
| Float / lure | Mid-high | Mid payouts |
| A / K / Q | Mid | Mid royal payouts |
| J / 10 / 9 | Low | Lower royal payouts |
- Fisherman - Wild: substitutes for paying symbols in the base game, and in the Free Spins it collects the value of every money-symbol fish on the board.
- Scatter: three or more trigger the Free Spins, with more scatters awarding more spins.
- Money fish: carry cash values and only pay in the Free Spins, when the Fisherman collects them.
Big Bass Bonanza Megaways bonus features
Tumbling wins
Every winning combination is removed and new symbols drop into the gaps, with fresh symbols also sliding in from the extra top reel. Tumbles keep chaining as long as each new drop forms a win, so a single spin can pay several times over. The tumble mechanic runs in both the base game and the Free Spins.
Free Spins and the Fisherman collect
Three scatters award 10 free spins, four award 15, five award 20 and six award 25. The round changes the rules: money-symbol fish no longer disappear - they stay on the board, and each Fisherman wild that lands collects the value of every fish showing. The more fish on screen when a Fisherman lands, the bigger the collect.
The Fisherman also drives a multiplier and retrigger ladder. Every four Fishermen collected during the round adds 10 more free spins and upgrades the multiplier: four Fishermen apply a 2x multiplier, eight apply 3x, and twelve apply 10x to the fish values collected from then on. Reaching the 10x tier on a board full of high-value fish is the main route to the 4,000x maximum win.
Bonus modifiers
Two random modifiers can appear during the Free Spins. Dynamite adds extra money fish to random positions on the board, and the Bazooka clears everything except the Fisherman wilds, tidying the reels so the next fish can land more cleanly. Both are there to help the collect build.
Bonus buy in Big Bass Bonanza Megaways
In the global version, Big Bass Bonanza Megaways has a bonus buy that pays a set price to open the Free Spins directly.
| Option | Cost | What you get |
| Free Spins | 100x the stake | Direct entry to the standard Free Spins |
| Super Free Spins | 300x the stake | Free Spins with a higher chance of the better outcomes |
On German-licensed sites the bonus buy is not available. Under the current German gambling treaty, buy features are not permitted, stakes are capped at €1 per spin, autoplay is off and a minimum spin time applies. At a German-licensed casino you reach the Free Spins only by landing three or more scatters. Where the buy is offered, check that it is legal in your jurisdiction before using it.
Big Bass Bonanza Megaways on mobile
Big Bass Bonanza Megaways is built in HTML5 and runs in the browser on both iOS and Android, with no separate download or native app required.
- We tested on an iPhone 14 in Safari and a Samsung S23 in Chrome, on standard German 4G and home broadband.
- The six-reel grid and the top sliding reel hold their layout in portrait, and the ways counter stays readable as the board expands and shrinks.
- The collect mechanic and the multiplier ladder in the Free Spins play out the same on a phone as on desktop, with the fish values clear on screen.
- Load times were short on both devices, and the artwork stays sharp through long tumble chains without slowdown.
Our take
Big Bass Bonanza Megaways suits players who like the fishing-series collect mechanic on a bigger Megaways board and can handle high variance. Its strengths are the up-to-96.70% RTP in the full version, the Fisherman collect with its 2x-3x-10x multiplier ladder, the retriggers that can extend the round to 50 spins, and the modifiers that help the fish land.
The limits are worth stating. The 4,000x max win is modest next to many Megaways titles, the RTP varies by casino with versions at 95.66% and 94.62%, and high volatility means the base game can run quiet until the Free Spins arrive. On German-licensed sites the bonus buy is off, the stake is capped at €1 and the pace is slower - which matters for a game where the buy is a common route to the collect round. For players who want the Big Bass collect on a Megaways grid, it holds up; anyone chasing a very high ceiling should look elsewhere.
Big Bass Bonanza Megaways FAQ
Who makes Big Bass Bonanza Megaways?
Big Bass Bonanza Megaways is developed by Reel Kingdom and published by Pragmatic Play. It was released in November 2021 as the Megaways entry in the Big Bass series.
What is the RTP of Big Bass Bonanza Megaways?
The RTP is 96.70% in the full version, but there are operator versions at 95.66% and 94.62%. Check the figure in the game's paytable before you play.
How do you trigger the Free Spins in Big Bass Bonanza Megaways?
Land three or more scatters - three award 10 spins, four award 15, five award 20 and six award 25. During the round, every four Fishermen collected adds 10 more spins.
Can you buy the bonus in Big Bass Bonanza Megaways?
The global version has a bonus buy at 100x the stake for the Free Spins or 300x for the Super Free Spins. It is not available on German-licensed sites, where buy features are not permitted.
What is the maximum win in Big Bass Bonanza Megaways?
The maximum win is 4,000x your stake, reached through the Fisherman collect with the 10x multiplier during the Free Spins.
Is Big Bass Bonanza Megaways available on mobile?
Yes. The game is HTML5-based and runs in the browser on iOS and Android, with the collect mechanic and multiplier ladder working the same as on desktop.
Where can you play Big Bass Bonanza Megaways?
Big Bass Bonanza Megaways is available at a range of casinos serving German players, including German-licensed sites.
Player reviews of Big Bass Bonanza Megaways
- Lukas, Berlin (2026): "The collect round is the whole game. Got to eight Fishermen for the 3x, board had a few big fish, and one collect paid around x250 the stake. The retrigger spins kept it going."
- Anna, München (2026): "It is the Big Bass collect on a Megaways board. On the German licence there is no buy and the €1 cap, so you fish for three scatters the slow way. Same bonus once you are in though."
- Jonas, Hamburg (2026): "High volatility - long quiet base game, then the free spins deliver. Never reached the 10x tier, that needs twelve Fishermen. RTP was the 94.62% version at one casino, worth checking."
- Sophie, Frankfurt (2026): "Played on my iPhone and the fish values are clear on the small screen. Average session around x70. The Dynamite modifier dropped extra fish right before a Fisherman once, nice timing."
- Felix, Köln (2026): "Without the buy the free spins are slow to come, and the German spin speed is slower too. But the multiplier ladder is satisfying when you climb it. The 4,000x cap is on the low side though."
- Marie, Stuttgart (2026): "Solid Megaways version of a familiar slot. Fixed no jackpot, it is all about the fish collect and the multiplier. Fair top RTP if the casino runs the full version - check first."
