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Bonus Bubbles


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Bonus Bubbles Online Slots

It’s time to get wet ‘n’ wild with this fintastic seaside soiree of a online slots game from Mr Spin Casino. Bonus Bubbles won’t leave you feeling washed up… in fact, you could be squids in as there’s a treasure trove of multipliers to be won. Whalecome, to our watery wonderland.

Bonus Bubbles features 15 win lines, a mini-game with mega multipliers up for grabs, and the huge progressive Mega Jackpot on offer. Can you make a splash with this Mr Spin exclusive online slots game?

If you dive beneath the surface, there’s a whole watery world for you to discover in this crabby caper. Will you net the buried treasure and swim your way to a turtleriffic win? Will the tide be on your side and drift you towards that progressive Mega Jackpot? Dive in today, and see if Bonus Bubbles can float your boat.

Bonus Bubbles Online Slots Index

Getting Started

Life’s a beach with Bonus Bubbles, and Mr Spin’s made it as easy as one, two, sea to play this exclusive online slots game. To start, tap ‘Bet/Lines’ button and use the ‘+’ and ‘-‘ buttons to increase or decrease your total bet and the number on win lines you’re playing on. Ready to play? Just tap the spin button and watch those bubbles bust into life.

Your cost-per-spin amount is calculated by multiplying your bet amount to the number of win lines you choose to play on. This means you can swim to your own tuna with Bonus Bubbles and set your bet to suit you. For example, a 50p bet on 5 of our fin lines would result in a total bet of £2.50. Or betting £1 on all 15 lines, would see your total bet amount total £15

Want to dip your toes in? The minimum bet on this game is a mini-school 2p a line, while the maximum is £20 a line.

If sitting back and enjoying the wildlife is more your thing, Mr Spin has included a handy ‘Auto Spin’ feature within the ‘Bet/Lines’ menu that’ll keep you swimming. Set the number of spins, minimum credit level or maximum win amount, and hit the spin button. The reels will spin through the number of spins you set at your previous bet amount until you hit ‘Stop’, or you play through them all.

How to Play

Beachy keen to get playing? Set your bet amount, tap the spin button and watch the tide roll in and stop at random.

When you line up a winning combination of crustaceans and critters on an active winline to be in for somefin special, with Bonus Bubbles wins calculated from left to right! What those winning combinations are depends on the symbols, with some paying out with a 2+ combination and others with 3 or more. Any on-reel winnings will be highlighted on screen before they’re added to your total credit.

Reel Wins

You’d be cray-sea to miss out on Bonus Bubbles as you’ll get a fintastic multiplier of your bet per line for each winning. This will depend on the symbols lined up, so press the menu button and tap ‘Paytable’ to view all of the winning combinations and their multipliers. All wins across multiple lines combine to form your total win, and only the highest win counts on each line.

Wild Symbols

You’re shore to love when our Wild symbols wash up on your win lines, as they substitute for every symbol except the mini-game and Free Spins symbols, helping to make a swimming combination!

For example, line up two K clownfish and a Wild to shellebrate a win that is the equivalent of three of the K symbols.


There’s no time for clownfishing around in the mini-game, Fish Feed. Spin 2 or more symbols on any of the 15 active win lines to enter. The game itself is simple: spin the reels to feed the fish and build up those multipliers.

You enter the game with three spins, but can win extra ones in the mini-game depending on if the tide is on your side. Land on an “x” symbol though, and you don’t win a multiplier on that specific reel. Fish Feed will end after a player has used all of the awarded bonus spins. Can you make a splash and maximise your multipliers?

Gamble Feature

Whenever you have a feature win in Bonus Bubbles mobile slots, you’ll have the opportunity to dive on in to the gamble feature or stick with your current win. This feature gives you the chance to boost your winnings – or lose the lot. You cannot enter this feature with a Mega Jackpot win, or any win over £1000.

Free Spins

You’ll make a splash if you line up three or more Free Spins symbols!

3x free spin symbols gives you 5 free spins, 4x symbols will give you 7 free spins, and 5x symbols will see you bagging 9 free spins! These free spins will lock to the same value of your last spin.

Dive in to even more free spins if you’re a fresh fish at Mr Spin’s Casino, as every new player receives 50 free spins* as a welcome bonus, alongside a 100% first deposit match up to £100*!

*T&Cs apply – 20x wagering applies to bonus credit

Progressive Mega Jackpot

During any spin there is a chance that the Progressive Mega Jackpot can be triggered by achieving 5 (FIVE) Jackpot symbols on an active win line.

The Progressive Mega Jackpot is available on any bet, with 0.025% being split evenly between the Progressive Mega Jackpot and the Reserve Jackpot.

The Mega Jackpot seed value is £100,000. The Mega Jackpot Promotional Pot System is available on any stake on any participating game plugged into the Mega Jackpot Promotional Pot.

When the Jackpot is won in any of the participating games, it is reset to the seed value and begins to rise again. Simultaneous wins can occur, if another player wins the progressive Jackpot then a notification to this effect would occur BEFORE the current player was awarded the Jackpot. The likelihood of winning the Mega Jackpot increases in correlation with the players bet amount.

In the event of a communication error after a Mega Jackpot win result has been determined and before it has been displayed on screen, the win amount will automatically be transferred to the player’s account. While the game is live, the Jackpots cannot be terminated.

Payout Information and Game Rules

Bonus Bubbles has a theoretical return to player of 92.19%. This is based on long term playback. System malfunctions void all payments.

Monies are staked in the following order: winnings, player deposits, bonus credit.

Mr Spin general T&Cs apply.


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Terms & Conditions
Licensed and regulated by the UK Gambling Commission
License number : 000-002091-R-104264-028

Terms & Conditions
Licensed and regulated by the UK Gambling Commission
License number : 000-002091-R-104264-028