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Quick Deposit

Jackpot: 327,674.59

Big Box Bonus


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Big Box Bonus Online Slots

As the latest ‘contestant’, Mr Spin welcomes you to Big Box Bonus where you could potentially win some major bonuses and hidden prizes in the Bonus Box feature! How would you like the chance to multiply your win by x500 with a Gold Box bonus? Play this 20 locked Win Line slot for a show stopping game featuring our Free Spins[/link] and unique Wild Symbols!

To be featured on this show, you’ll need a PC/ Desktop; any players on a mobile or tablet will need an iOS 11 or Android 5.1 and above.

Sign up as a new ‘contestant’ and perhaps you could receive our No Deposit Bonus of up to 50 Free Spins No Deposit required!* If you’ve already received your Welcome Bonus, then you can also get our 100% First Deposit Match Bonus.* It’s so easy to make a deposit with our Pay by Phone Bill option, you wouldn’t even have to add any card details!

Those who tune in to Mr Spin regularly, can get themselves a bonus with our Game of the Month** bonus or spread the word of Big Box Bonus with our Refer a Friend*** bonus!

*18+. New Players only. Up to 50 (18p) free spins (FS) locked to Chilli King. Win paid as bonus credit. 40x wagering requirement on FS and bonuses. 3 day expiry. £10 max win from free bonus credit or free spins bonuses. 100% deposit match of first deposit awarded as bonus credit. Max bonus £100. Min deposit £10. T&Cs apply. BeGambleAware.org

**18+. Eligible to registered players only. Bonuses may include Deposit Match, Bonus Credit or Free Spins – maximum amounts, expiry, and min deposit will vary depending on the individual’s promotion. 40x wagering requirement.£10 Max Win from playing the No-Deposit Bonuses. T&Cs apply. BeGambleAware.org

***18+. Up to 50% deposit match bonus of friend's first deposit received when the referred friend has played through their first deposit of £3. Bonus value decided by lobby game. Bonus credit can be used in any game, Max Bonus £100. An additional bonus of up to £7 will be provided via lobby game when friend registers. 40x wagering requirement. 3 day expiry. £50 Max withdrawal from bonus win. Withdrawal of deposit excludes player. You can refer up to 6 friends every month. T&Cs apply. BeGambleAware.org

Big Box Bonus Online Slot Index

How To Play Big Box Bonus Online Slots

So, what is the Total Bet? The Total Bet is the amount wagered for every Bet per Line multiplied by the active Win Line. The Bet per Line can be changed by the ‘Bet’ button in the bottom left corner to adjust the set bet. You can choose to bet as low as 1p up to £5 per spin. As this game is locked at 20 Win Lines, these will not be able to be adjusted.

An example of a Total Bet for this game would be a Bet per Line of £2 will be multiplied by 20 Win Lines for a total of £40 overall.

Once you’ve decided on your Total Bet, you can start to play for the chance to win some major prizes!

Reel Wins

Get some big wins when you line up at least 3x matching symbols on an active Win line, with the most being up to 5x matching symbols. All wins will pay from left to right, with the value of those wins depending on the symbols and frequency of the symbols on the active Win Line. You can learn the rules to this game at the paytable located in the top left corner of the screen.

Once you win, the winning line is then highlighted before being added to the credit on screen. If you win across more than one Win Line, then they all get added together for a bigger win, but there is only one win per line!

Free Spins

No need to call a friend to win a Free Spin bonus! You could win either 5,7 or 9 Free Spins if you spin in 3,4 or 5 Free Spin Symbols anywhere on screen, respectively. When in the Free Spin mode, it will use the last bet amount played for each spin, but it won’t use up any of your own credit until the Free Spins have been used up.

Once they have been used, it will return to the main reels where your own credit will be used again.

Bonus Boxes

The Bonus Box symbols come in three different colours, with each one having a different bonus value. The red or blue box will award a mystery prize if you spin 3x or more matching symbols on an active Win Line! Be in with a chance of multiplying your win by x500 if you spin 3x or more gold boxes, but this is only activated in the Free Spins mode!

The more bonus symbols on a Win Line, the higher the prize can be!

Wild Symbols

The banker’s calling, and he said that Wild symbols are here to help you win some amazing prizes! How, may you ask? Wild symbols act as a substitute for other symbols on an active Win Line, except for Free Spins. This means if you land two matching symbols, but you need a minimum of three to get a win, then a Wild symbol can act as the third matching symbol to provide you with a win. The more symbols or Wilds on an active Win Line, the bigger the multiplier will be!

Let the Wild times commence with this fun Wild symbol feature. If you manage to spin a Wild symbol to complete a Box Bonus, the Wild symbol can multiply the win by up to x40, depending on the colour of the box!

There is an exception to this rule however! Progressive Jackpots cannot be won with a Wild symbol, but a combination of 5 Jackpots and Wilds will award a x120 multiplier!

Progressive Mega Jackpot

The occurrence of “JACKPOT” symbols filling an active win line awards the progressive Mega Jackpot. The progressive Mega Jackpot is available on any bet, with 0.025% of the bet being added to the progressive pots. Half of the value gets added to the current jackpot, and half to a reserve pot ready for the next winner. When the Jackpot is won, it is reset and begins to rise again. Simultaneous wins can occur. If a player wins the progressive Mega Jackpot then a notification would occur BEFORE any other player was awarded the Jackpot. Any players in a game that contributes to that same Mega Jackpot will receive the on-screen notification of a reset the next time they press the spin button if it is within 10 minutes of the jackpot being won. Players will not be charged for the spin generating this notification. The Mega Jackpot guaranteed starting value is £100,000, with even higher starting prizes possible with a built up reserve pot. The Mega Jackpot promotional pot system is available over any stake on any participating game plugged into the Mega Jackpot promotional pot. 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

Big Box Bonus online slots has a theoretical return to player of 94.00%. 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. Wagering requirements apply to player deposits and any casino bonus offers.

Looking for more Bonuses?

Want a chance to win some more Free spins with no deposit? Our Sister Site Jammy Monkey has No Deposit Bonuses and other casino bonuses that could get you Free Spins, Bonus Credit or Deposit Boosts to play with on any of the games! Mr Spin offers a great No Deposit Bonus too, just for signing up.

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