Big Bass Bonanza

It’s time to go fishing! Play Big Bass Bonanza and embark on an epic angler’s adventure! Cast off into the crystal-clear waters of Big Bass Bonanza with this exciting online slot! These waters are teeming with winning potential and features to help you fish ‘em out.

Wilds and Scatters are all there to play for in Big Bass Bonanza slots – with three or more Scatters landing anywhere on the reels triggering the Free Games feature. This can dish out stacks of free spins, plus some juicy jackpot multipliers!

And who doesn’t like the idea of hitting online slots with a bang? The Dynamite Feature will also blast away low-value symbols to reveal winning combos.

Sounds good, right? Play Big Bass Bonanza online and see if you can net the catch of the day.

As well as Big Bass Bonanza slots, you’ll find hundreds of other online slots and games at Grosvenor Casino. We’ve got Grosvenor Originals, action-packed Megaways games, Slingo and much more.

Play Big Bass Bonanza

Ready to go fishing and catch a big bass? Before you play Big Bass Bonanza slots, let’s have a look at the format of the game, the bonus features and how you can win big.

Format and Betting Options

Big Bass Bonanza is a 5x3 reel online slot with 10 paylines. When you play Big Bass Bonanza, the minimum bet you can make it 10p and the maximum is £50. With Big Bass Bonanza slots, the maximum payout is £250,000.

As with any online slot, first you’ll need to select your stake – that’s how much you want to wager. Once you do and you hit the spin button, the reels will spin. The aim of the game is to secure lines of matching symbols. The more matching symbols and the higher their value, the more you win.

But there are plenty of bonus features to get your fishing hook into too. Let’s dive underwater and take a look.

Big Bass Bonanza Bonus Features


Pays for himself. Appears on all reels (only during free game). Substitute for all symbols except SCATTER to help form winning lines. You can’t miss it – he’s a fisherman.


The scatter symbol in Big Bass Bonanza slots is a bass that’s been caught. It doesn’t pay for himself, and appears on any reels during the base game. If you land 3 scatters, you’ll get 10 Free Spins; 4 scatters land you 15 Free Spins and 5 catch you 20 Free Spins.   

Fish Moneys

When you play Big Bass Bonanza, a money symbol awaits – the Fish. You’ll see fish on the screen, with each assigned a monetary value.

You can only get these awards is a fisherman appears on screen. If a few fishermen are on screen – each will collect fishes. For example – if we have 5 fishes with a total prize of 100 and 2 fishermen – the win will be 100 + 100 = 200.

Free Games

Free game starts if 3 or more scatters appear on screen. During the free game we have 4 stages.

Stages are controlled by the total count of fishermen during Free Games. When you have 4 fishermen it increases the stage, but this only happens if you have enough fisherman on screen on the last spin of that stage. If you have less than 4, the Free Games finish. If you have 4 you hit the next level.

On each level you get +10 Free Spins. How much you win depends on the value of the fish symbols + the level you’re on. For Level 1 you win 1 x fish value. It’s 2x for Level 2, 3x for Level 3 and 10x for Level 4.  

Dynamite feature

Another part of the online slots bonus when you play Big Bass Bonanza is to only spin a single fisherman in view with no fish. The fisherman then throws a stick of dynamite, and some symbols in view will change to fish and pay as normal.

Big Bass Bonaza RTP and Volatility

The RTP of Big Bass Bonanza slots is 94.5%. It is also a Medium-High Volatility game – this means it will pay out bigger wins than a low volatility slot, but they will likely be more spread apart.

Big Bass Bonanza Payouts

The maximum payout on Big Bass Bonanza is limited to 2,100x your original stake. When you play Big Bass Bonanza slots with Grosvenor Casino, the maximum amount you can win is £250,000.

For information on symbols and base game instructions, please see the in-game help menu.

Sign up to Grosvenor Casino to play Big Bass Bonanza

As well as bringing you the best online slots and casino games around, you’ll find plenty of bonuses and offers when you sign up to Grosvenor Casino. This includes a welcome bonus for all new players.

Create your Grosvenor Casino account today to play Big Bass Bonanza and make the most of our online slots and casino games.

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