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Bonus Bubbles mobile slots by Mr Spin Casino
Jackpot £6,252.75

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 a huge progressive 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 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 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 that’ll keep you swimming. Set the number of spins, minimum credit level or maximum win amount, and hit ‘Start’. 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 ‘Spin’ 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 swim on over to the paytable in-game for more information. 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 Jackpot win, or any win over £1000.

Bonus 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.  18+. New players only. Up to 50 locked free spins available to win via the New Player Bonus, usable on Reel Royalty only. All winnings paid as bonus credit. This Bonus expires 24hrs after player registration. 100% deposit match of first deposit, up to £100 and paid as bonus credit with a 1x wagering requirement. Bonus credit transferable between games but cannot be withdrawn. Max withdrawal without depositing is £50. You can withdraw any unspent deposit, in addition to the funds in your cashable credit account. BeGamble Aware.

Progressive Jackpot

The occurrence of 5 (five) “JACKPOT” Jackpot symbols on an active win line awards a progressive Jackpot. The progressive Jackpot is available on any bet, with 0.005% of the bet being added to the progressive pot. There is no hidden reserve pot.

When the Jackpot is won, it is reset 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 game Jackpot seed value is £2000. The Jackpot is individual for this game, it is not shared with any other games.

In the event of a communication error after a progressive 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. Please note that deposits are non-withdrawable.

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