Online Casino Bonuses

Card Reg Bonus

Free Welcome Bonus

Boss the slots with £10 free when you register. We'll credit you with your free funds once your card is added to the account - there's no deposit required, you'll just be ready to start spinning your favourite slots completely free.

T&C's Apply. New players only. Opt in required. 99x wagering requirement. Maximum single stake with a bonus is £5. £50 max win and withdrawal for non-depositors. 7 day expiry. Only bonus stakes contribute towards wagering requirements. Not all games contribute towards wagering. 18+ Begambleaware.org

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First Deposit Bonus

100% First Deposit Bonus, up to £50!

There's up to £50 in bonus funds up for grabs when you make your first deposit at Slot Boss. We'll match you 100%, giving you more to play your favourite slots.

T&C's Apply. New players only. Opt in required. 100% deposit match up to £50. 40x wagering requirement on bonus. Maximum single stake with a bonus is £5. 30 day expiry. Only bonus stakes contribute towards wagering requirements. Not all games contribute towards wagering. 18+ Begambleaware.org

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Current Player Promotions

Jackpot King Free Spins

Play Your Way Free Spins

Take a shot at the incredible £1.5 Million Jackpot King with £2 of Play Your Way free spins this week. Opt in via the My Promotions page then stake £20 cash on any of your favourite slots to qualify. Come back the following day and your free spins will be waiting on selected Jackpot King slots! Will you spin more at 20p or go all out at £1 a spin?

T&C's Apply. Promotion will run from 00:01 to 23:59 each day between Monday 16th September 2019 to Thursday 19th September 2019. Must opt in then stake £20 cash on any slots in a single day to qualify. Free spins will be credited on eligible slots by 3pm the day after qualification. Players can decide the stake level to play free spins with a minimum of 0.20p per spin up to a maximum of £1 per spin. All winnings from free spins will be credited as cash. 3 day expiry. 18+ BeGambleAware.org

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Slot of the Week

Slot of the Week

Get 10 free spins on our Slot of the Week when you stake £20. Opt in from the "My Promotions" page and start spinning Mega Dragon to earn yours.

T&C's Apply. Promotion will run from 00:00 Monday 16th September to 23:59 Sunday 22nd September 2019. Opt in required. Must stake £20 cash on Mega Dragon to be credited 10 free spins. Free spins are awarded at £0.10p per spin with winnings paid as cash. 3 day expiry. 18+ BeGambleAware.org

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Stay in the Know

Keep in touch

Never want to miss another bonus again? Stay up to date on all our promotions including free spins, losses back and deposit offers by making sure you're opted in to receive marketing. Just follow the link below to select how you want to hear from us.

No wagering requirements

Wager-free spins

At Slot Boss we guarantee that all the free spins we give away carry no wagering requirements. That means all winnings are yours to keep.

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** Any bonus issued is valid for a period of 30 days from the date of issue unless otherwise stated in the specific promotion. Any remaining/unused bonus at the end of the stated period will be removed from the player’s account. See terms and conditions for full promotional terms. **