Take a look at all the current offers we have available to new and existing players alike. We regularly update this page with brand new promotions, so keep your eyes peeled for something that suits you.

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Casino Welcome Offer

100% Deposit Offer up to £150 and 50 Free Spins on Big Bass Splash

Opt-In Required. New players, single deposit of £10+. Cash & wagering conditions vary. Max reward £150. 7 days to claim + further 7 days to wager 35x. 50 FS 10p each awarded on Big Bass Splash after wagering, 3 day expiry. Exclusions & T&C’s Apply.


Win bigger and better prizes with our Gigantic Jackpots. Discover the Mini, Minor, Major and Mega Jackpots on hundreds of top games at Slot Boss!

Opt-in required within eligible game. Portion of each stake added to progressive jackpot value. Minimum £0.10 game stake & £0.09 jackpot stake required. Progressive jackpot amounts shared across the LeoVegas network. RTP of 70%. T&C’s Apply.


What is a casino bonus?

A casino bonus is something that is used to reward players for matching set criteria. The rarer the criteria, the bigger the bonus. Activating casino bonuses is not mandatory but it is recommended. Bonuses can come in different forms, some of which will come as cash rewards, some will be in the form of credit and others may even come in the form of Free Spins. Bonuses will often have a set of rules that players have to follow but they can always be found in the terms and conditions section of licensed online casinos like Slot Boss.

Step One: Sign up to Slot Boss using the ‘Register’ button.

Step Two: Head to the My Promotions page and make a deposit of between £10 and £75.

Step Three: Wager this amount 35x and return to the My Promotions page. Tip: You can keep an eye on how far you have wagered your deposit within here.

Step Four: Your matched cash reward and 50 wager-free spins will be available to claim from the My Promotions page.

Yes. If you’re looking to activate any of our casino bonuses, you can win and make money. Players must ensure that bonuses are legitimate and from a licensed online casino like Slot Boss. It all comes down to how your spins play out. If the reels spin in your favour it is definitely possible to make money from online casino bonuses.

Players can not withdraw their bonus balance until it has been wagered the correct number of times. It must be converted into a cash balance by matching the terms and conditions provided. Once bonus funds have been converted into cash, players can withdraw their winnings. You can keep an eye on any wagering targets via the My Promotions page.

Free Spins are a type of bonus that is found in online slots. If you activate a Free Spins promotion, you will receive a set number of spins for free without having to deposit. Any winnings from these Free Spins will be received as cash for players to continue playing with on any of our games. These spins are the same as standard spins in the chosen slot and are not representative of the Free Spins bonus round that can be found in some of our slots such as Rainbow Riches Free Spins.

The games players can use their online casino bonuses on varies from bonus to bonus. You can find an exact list in our Terms and Conditions. However, in the majority of bonuses, slot games including Jackpot Slots are eligible, but live casino games are not.

Casino Bonus at Slot Boss

Here at Slot Boss, we know that when we’re looking to play the Best Online Slots the first thing we look for is a fantastic casino bonus to go alongside it. With that in mind, we’re giving new players the opportunity to unlock up to £150 with your first deposit to play your favourite online slots, as well as up to 50 free spins on the phenomenal Big Bass Splash. Find out about these promotions and the important terms and conditions that apply to all promotional offers here.

Get up to £150 cash and 50 wager-free spins

Unlock up to £150 cash plus 50 wager-free spins your first deposit in your first 7 days - Simply make a deposit between £10 and £75, wager this 35 times and we’ll match your deposit with a cash reward alongside 50 wager-free spins. Our free spins never carry any wagering. Full T&Cs apply. New players only. 7 days to claim offer and deposit a min of £10 with a further 7 days to wager 35x. Cash stakes only and wagering contributions vary. Max reward £150. 50 wager-free spins 0.10p each on Big Bass Splash awarded after wagering complete, winnings paid as cash. 3 day expiry.

Winnings from your free spins go direct to you

A fan of Free Spins? So are we! This is why we ensure that our Free Spins promotions have no wagering requirements! Alongside the chance to unlock £150 cash and 50 free spins with your first deposit, we run regular promotions for our players - so be sure to keep an eye on your inbox.

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