Big Bass Bonanza Megaways slot

How the Big Bass Bonanza Megaways slot machine counts its ways

Instead of fixed paylines, the game uses the Megaways mechanic: each of the six reels shows a different number of symbols on every spin, and the number of ways to win is those six numbers multiplied together. A win needs matching symbols on adjacent reels from the left, in any row.

More ways doesn’t mean more value per spin. Your stake is the same whatever the reel heights, and the game’s maths already accounts for every possible combination. A spin with 46,656 ways can still pay nothing; a 64-way spin can hit a good line. The history of Megaways explains how Big Time Gaming’s licensed engine spread across studios.

What happens on one spin

Each paid spin follows the same order. The result of the first drop is fixed by the random number generator before anything moves on screen, and each refill is drawn the same way.

1. You choose a stake (up to £5, or £2 if you are 18 to 24).
2. The RNG sets the height of each reel and the symbols that fill it.
3. The game counts the ways and pays any left-to-right matches.
4. Winning symbols are removed by the tumble and the gaps refill from above.
5. Any new wins pay and tumble again, until a drop produces nothing.
6. Scatters in view at the end are counted; three or more start the free spins.

The tumble is why a single stake can produce a chain of small wins. It doesn’t add value beyond what the RTP already includes; it simply spreads the payout over several drops.

Fish money symbols and the fisherman wild

Every fish that lands carries a cash value printed on it. In the base game a fish is mainly a line-paying symbol, and slot databases describe its line pay as small. The cash values matter in the bonus, where the fisherman wild appears and collects the value of every fish in view at the same time. That collect mechanic, borrowed from the cash collect family, is the signature of the whole Big Bass series, which Reel Kingdom makes with Pragmatic Play as distribution partner.

A worked example at a £1 stake: the bonus screen shows fish worth £2, £5 and £10 and one fisherman lands. He collects £17. If two fishermen land on the same drop, each collects the full set, so £34. Once you have reached the first multiplier level (2×), the same single collection pays £34, and two fishermen pay £68. These numbers are illustrative; actual fish values are drawn at random from the game’s list.

Big Bass Bonanza Megaways free spins and the retrigger ladder

Three or more scatter symbols anywhere in view trigger the free spins. The number of spins depends on how many scatters started the round.

During the round every fisherman collected is added to a meter. Each fourth fisherman awards 10 more spins and lifts the multiplier applied to his collections. The ladder has three steps:

• 4 fishermen: +10 spins, collections multiplied by 2×.
• 8 fishermen: +10 spins, collections multiplied by 3×.
• 12 fishermen: +10 spins, collections multiplied by 10×.

So the most spins one round can run is the starting allocation plus three blocks of 10. Reaching the 10× level late in the round leaves few spins for it to work, which is one reason results vary so much between bonuses. Read about increasing multipliers in free spins for the general pattern.

Dynamite and bazooka modifiers in the bonus

Slot databases describe two random modifiers that can fire during free spins when a fisherman lands but there are no fish to collect. Dynamite adds fish to random positions so the fisherman has something to collect, and a bazooka clears the grid except for the fisherman wild before new symbols fall. They soften the worst outcome of the bonus, a fisherman landing alone, without changing the long-run RTP, which already includes them. The rules screen at your casino lists exactly when each can trigger.

Big Bass Bonanza Megaways RTP and volatility in pounds

The top published Big Bass Bonanza Megaways RTP is 96.7%, a house edge of 3.3%. Lower-RTP versions are also supplied to operators, so the figure at your casino may differ; check the game rules. Volatility is rated very high, the top band on most scales.

Very high volatility means the averages above will almost never be what you see. A bonus that hits the 10× level can pay many times the session’s stake; a bonus where the fisherman finds few fish can pay less than the stake. Plan sessions around the amount you are prepared to lose, not the average. Our bankroll guide shows how spin count and stake trade off.

Big Bass Bonanza Megaways max win at UK stake levels

The game’s max win is 4,000× your stake. Once a round reaches that figure it ends and pays the capped amount. That is almost double the 2,100× cap on the original Big Bass Bonanza, which fits its higher volatility.

The cap is a ceiling, not a target. It needs the top multiplier, plenty of fish and several fishermen arriving together; most bonuses finish nowhere near it.

Megaways vs the original Big Bass Bonanza

The original Big Bass Bonanza runs on a fixed 5×3 grid with 10 paylines. The Megaways edition keeps the fish, the fisherman and the 2×/3×/10× ladder but changes everything around them: variable reel heights, tumbles, more ways and very high volatility. If you want the same theme at a gentler pace, the original is the closer fit; Bigger Bass Bonanza and Big Bass Hold & Spinner Megaways are other branches of the family. Our comparison of Big Bass Bonanza and Fishin’ Frenzy shows how the fishing genre’s two biggest names differ.

UK rules on the Big Bass Bonanza Megaways slot

Versions offered in Great Britain follow the Gambling Commission’s product design standard (opens in a new tab), in force since 31 October 2021: no autoplay, no turbo or quick-spin, at least 2.5 seconds per spin, no celebration of returns at or below the stake and a visible net position. Tumble sequences still play out, but each new paid spin must be started by you.

The ante bet and bonus buy options sometimes seen on Pragmatic Play titles elsewhere are not part of slots supplied to Great Britain, so the scatters are the only way into the bonus. Stake limits of £5 (25 and over) and £2 (18 to 24) apply per spin, as explained in the Commission’s stake limit guidance (opens in a new tab) and on our £2 limit for 18 to 24s page.

Big Bass Bonanza Megaways myths

• “More ways on screen means a win is coming.” The way count is drawn at random each spin and has no memory.
• “Fish on screen in the base game mean the bonus is close.” Base-game fish have no link to the scatter chance.
• “The game pays more after a long losing run.” Each spin is independent; there is no catch-up. See do slot machines remember past spins.
• “A demo that paid well means the real game will too.” Demo and real modes share maths, not luck.

Checking the RTP and rules before you play

1. Open the game and select the menu icon.
2. Find the game rules or information page.
3. Read the RTP line and compare it with 96.7%.
4. Check the free spins section for the scatter counts and multiplier ladder.
5. Look for the max win statement (4,000× on the top version).

The Big Bass Bonanza Megaways demo is a useful way to read these rules and watch the ladder work, and it is available at UK casinos only after age verification, under rules the Gambling Commission announced in 2019 (opens in a new tab). Pragmatic Play’s own studio website (opens in a new tab) lists its games, but your casino’s help screen is the version that applies to you.

Where to play Big Bass Bonanza Megaways in the UK

Game libraries change, so search each casino’s lobby for the Megaways version. One point to be clear about: PlayOJO’s welcome offer gives 80 no-wagering free spins at 10p each on the original Big Bass Bonanza, not on this Megaways edition, after a first deposit of at least £10 (18+, new UK customers excluding Northern Ireland). Winnings are paid in cash.

Coral gives 100 free spins at 10p each on selected games when new customers aged 18+ deposit and bet £10 on slots; spins must be accepted within 48 hours and used within seven days, with no wagering. Ladbrokes gives 50 free spins a day for ten days (up to 500, 10p each, no wagering) after you play £10 on slots. Eligible games are chosen by each casino, and certain payment methods are excluded. Coral and Ladbrokes share an operator, so check whether you can hold both offers. Our Big Bass Bonanza free spins page compares the options. Terms apply.

Before you deposit, set limits; GAMSTOP (opens in a new tab) lets you block all UK-licensed gambling sites if you need a break.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.