New Casumo players have the chance to make a big catch shortly after setting up their account.
By simply signing up and depositing at least £20, you will unlock 50 free spins for Big Bass Bonanza. Plus, the casino will also match said deposit (up to £100) in free bets.

What you need to know about this offer
What do you get?
The spins are worth 10p, so therefore you get £5 worth of free spins to use. All winnings that come from these will need to be wagered through 30 times before they can be cashed out – which is the lowest requirement you’ll find when it comes to casino welcome bonuses.
Additionally, you’ll receive a 100% matched deposit of up to £100. Therefore, a deposit of exactly £100 will see you take the maximum bonus available. As with the free spins, these free bets come with a 30x wagering requirement. Therefore, if you claim the full £100, you will need to place £3000 worth of wagers before you can withdraw any winnings.
The Big Bass titles are among the most instantly-recognisable in the world of online slots and Big Bass Bonanza is perhaps the most popular of all, with its high RTP of 96.71%, medium-high volatility level, and a max win of 2,100x.
Who can qualify and how to claim
Anyone signing up to, and making a deposit of at least £20 on, Casumo for the very first time is eligible. Doing this will automatically add the free spins to your account. Simply follow these steps to get started:
- Hit the ‘sign up’ button on the Casumo home page
- Select the casino welcome offer – not the sportsbook one!
- Enter your personal details and have your account verified
- Once you’ve completed these steps, make your deposit between £20-£100
- You’re now good to go! Deposit match and free spins unlocked
- Head to Big Bass Bonanza to start using your spins
How long is the bonus active?
The spins must be accepted and used within three days – otherwise they’ll expire. The deposit bonus – which could be anywhere between £20 and £100 depending on how much of your own money you deposited – needs to be used within seven days. Again, if any of this is left unused, it will disappear from your account.
Terms and conditions of this casino offer
Eligibility
This offer is ready to be claimed at any time, as long as you are over the age of 18 and haven’t had a Casumo account before (and, by extension, haven’t made at least one deposit with them).
Other terms
- While you can make a withdrawal before meeting the requirements of the bonuses, you will be forfeiting any winnings accrued from those bonus bets and/or spins.
- Casumo may, at their discretion, alter the terms of the conditions of the bonus and also reserve the right to block, suspend or exclude players from this promo, or any future promos.
- Anyone found to be abusing the bonus may see their winnings withheld or confiscated.
About the author

Daniel Smyth
Daniel Smyth has seen the online poker, casino, and betting industry from every angle. He previously played poker semi-professionally before working at WPT Magazine as a writer and editor. From there, he transitioned to online gaming where he’s been producing expert content for over 10 years.
Commercial content notice: Taking one of the bookmaker offers featured in this article may result in a payment to talkSPORT. 18+. T&Cs apply. GambleAware.org
Remember to gamble responsibly
A responsible gambler is someone who:
- Establishes time and monetary limits before playing
- Only gambles with money they can afford to lose
- Never chase their losses
- Doesn’t gamble if they’re upset, angry or depressed
- Gamcare – www.gamcare.org.uk
- GambleAware – www.gambleaware.org
Find our detailed guide on responsible gambling practices here.
For help with a gambling problem, call the National Gambling Helpline on 0808 8020 133 or go to www.gamstop.co.uk to be excluded from all UK-regulated gambling websites.
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