Online Slots 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 of £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 of £5. 30 day expiry. Only bonus stakes contribute towards wagering requirements. Not all games contribute towards wagering. 18+ Begambleaware.org

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10% Losses Back Up to £5 Back!

This weekend, play with insurance here at Slot Boss. Opt in via the My Promotions page and get 100% Losses Back on Rainbow Riches. If you aren't a winner we'll refund you up to £5 back as bonus funds on Monday!

T&Cs Apply. Promotion will run from 00:01 Friday 24th May to 23:59 Sunday 26th May. Must opt in via the My Promotions page to begin promotion. Refund will be calculated as 100% of your net cash losses on Rainbow Riches. Losses will be refunded to your bonus balance. Bonus will carry a 2x wagering requirement. Minimum payout of £1. Maximum payout of £5. 18+ BeGambleAware.org

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Slot of the Week 10 fiery free spins

See if you can slay the Dragon... Opt in and stake £20 on Dragon's Luck and receive 10 free spins straight away!.

T&Cs apply. Promotion will run from 10:30 Monday 20th May to 23:59 Sunday 26th May. Opt in via the "My Promotions" page. Must stake £20 cash on Dragon's Luck to be instantly credited 10 free spins on the same game. Free spins are awarded at £0.10p per spin. Winnings from free spins will be paid into cash balance. 18+ BeGambleAware.org

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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. **