Monster Casino Sister Sites: Best Alternatives & Offers (2026)
List of Monster Casino Sister Sites & Alternatives
Find and compare all of the best Monster Casino sister sites below, as well as the welcome offers of each. A couple of the ProgressPlay sister sites have been included (see the 'betting' tab), but we have also added some good alternatives to try out.
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New Players Only. Wager from real balance first. 10X wager the bonus money within 30 days and 10x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus and any winnings from the bonus are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 1 times the bonus amount or from free spins: £20. Limited to 5 brands within network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply. -
New customers online only. Only valid with code B10GET100 on registration. £/€10 min stake on slots and receive 100 Free Spins on Big Bass Splash. Free Spins credited within 48 hours of meeting qualifying criteria. 7-day expiry on code and Free Spins. One per customer. 18+. Full T&Cs apply. Gambleaware.org. -
New Players Only. Wager from real balance first. 10X wager the bonus money within 30 days and 10x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 1 time the bonus amount or from free spins: £500. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply. -
New Players Only. Wager from real balance first. 10x wager the bonus money within 30 days and 10x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 1 time the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply. -
New Players Only. Wagering occurs from real balance first. 10x wager the bonus money within 30 days. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 Days from receipt. Max conversion: £50. Min Deposit £20 required. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply. -
New Players Only. Min Deposit £20 required. Wager from real balance first. 10x wager on any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the free spins are valid for 7 days from receipt. Max conversion from free spins: £30. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply -
New Players Only. Wager from real balance first. 50X wager the bonus money within 30 days and 50x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply -
New Players Only. Wager from real balance first. 10X wager the bonus money within 30 days and 10x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 50 the bonus amount or from free spins: £20. Withdrawal requests void all active/pending bonuses. Full Terms apply. -
New customers only. Deposit and wager a minimum of £25 on Big Bass Splash 1000 on registration day receive 100 Free Spins on Big Bass Splash 1000. Free Spins will be credited by midday the following day and expire after 7 days. 10x wagering requirement on Pragmatic Play slots before withdrawal. Full T&Cs apply.
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18+. If your first bet is a Treble or Up on Any Sport (minimum 3 selections, odds evens) AK Bets will boost the profit gained on that initial bet by 25% in the form of a Free Bet up to a value of £/€100. Applies to new customers who sign up with the promo code AKACCA100. 7-day expiry on free bet. - New Players Only. Free bet - one-time stake of £50, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Free bets and Bonuses are valid for 7 days. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply.
- New customers online only. Register and bet a min £/€5 at odds of 1/1 (2.0) or greater across sports or racing within 7 days of registration to qualify. Receive £/€10 Tote Credit, £/€10 Free Sports Bet within 48 hours of qualifying bet settlement. Qualifying bet is the first racing pool or sports bet added to bet slip. Voided/non-runner bets will not qualify; subsequent bet will be qualifying bet. 7-day expiry. 18+. One per customer. Selected customers only. Full T&Cs apply. Gambleaware.org. Full T&Cs apply.
- 18+| New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £30, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Free bets and Bonuses are valid for 7 days. Withdrawal requests void all active/pending bonuses. Full T&C's apply.
- New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £30, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 Days from receipt. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits Full Terms Apply.
- New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Free bets and Bonuses are valid for 7 days. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply.
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New Players Only. Minimum stake £30, minimum odds 1.5, stake not returned. 1X wagering the winnings from the free bet. Wagering occurs from real balance first. Wagering requirement is calculated on bonus bets only, wagering starts from real funds. Free bet is valid for 7 Days from issue. Max conversion: £200. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Full Terms Apply -
18+ | UK New Players Only | Opt-in Required | Min £20 qualifying bets, stake not returned | Free bet – one-time stake of £50, min odds 1.7, stake not returned | Bonus Code: FBSBET | 1X wager the winnings | Wager from real balance first | Wager calculated on bonus bets only | Max conversion: £200 | Valid for 7 Days from issue | Excluded Skrill & Neteller deposits | Withdrawal requests voids all active/pending bonuses | Full Terms apply -
New Players Only. Offer Is Valid 00:00 CET 01/01/2026 until 23:59 CET 31/12/2026. Min £10 qualifying bets, stake not returned. Free bet is a one-time stake of £40, minimum odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £100. Free bets and Bonuses are valid for 7 days. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply. - New Players Only. Free bet – one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 Days from receipt. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply
- New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Free bets and Bonuses are valid for 7 days. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply.
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18+. New Customers Only. Min deposit £20. Maximum one £10 Free Bet & two £5 Bet Builder Free Bets. Qualifying bet must be placed at odds of Evens (2.00) or greater. Paid as bonus tokens: Token 1 Min odds Req: 4/5 (1.80). Token 2 & 3 are valid for Bet Builder only and are subject to min odds of 2/1 (3.00). Begambleaware.org. T&Cs Apply. - 18+ Offer available to new customers only who sign up with Promo Code BET40GET20. Place a bet of £40 (or more) at EVS (2.0) or greater and Get 2 x £10 Free Bets. 1 x £10 Free Bet paid automatically & following £10 Free Bet after 24hrs. Min Free Bet odds 4/1 (5.0). Free Bets expire after 24hrs. Full T&Cs apply.
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New Players Only. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Free bets and Bonuses are valid for 7 days. Limited to 1 sport & 5 casino brand/s within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply.
Timeline of Monster Casino Sister Sites
Full List of Monster Casino Sister Sites
Who Owns Monster Casino?
Monster Casino has not been on the market for that long, hitting the ground running in 2017, and the site has become relatively popular since. It is owned as well as operated by ProgressPlay Limited, which is a well-known operator on the UK scene. Licensed and regulated by the UKGC under account number 39335, the company has 194 domains to its name.
Granted that a hefty portion of these are 'inactive', there are several active ones and many white-label arrangements as well. ProgressPlay is notorious for the latter, launching its services on various domains to attract new customers all of the time. A core focus has never been its thing, but at least this means Monster Casino has many sister sites.
Unfortunately, as we will take a look at next, most ProgressPlay brands are of very low quality and we would thus like to highlight some alternative brands instead. But first, using Monster Casino as the example, how come ProgressPlay is nowhere near the best betting sites in the UK?
My Thoughts on Monster Casino
I have never been a fan of the ProgressPlay brands, let's just get that out there. The sites tend to be rather slow, the design is incredibly outdated compared to other betting sites, and sites seem to shut down left right and centre. This is not something I'm looking for in a betting site, with the exception of doing a welcome bonus hunt.
For longevity, though, there are so many other good brands that also offer promotions for existing customers, not just half-decent welcome offers. Don't get me wrong, there is a reason why ProgressPlay has survived for quite some time now - seeing as the products are at least okay - but the best bookies have also made great strides forward in the same period.
Monster Casino Alternatives Reviewed
We listed some of the Monster Casino sister sites at the top of this page, so if you really want to join one, scroll up! Below, however, we will take a look at some good alternatives that we feel are much better to sign up for.
BetMGM
BetMGM has only been active in the UK since the summer of 2023, making it one of the new betting sites like many of the ProgressPlay brands, but the difference in class is evident compared to the latter. Indeed, the LeoVegas-powered site is now considered to be one of the best in the UK, which certainly cannot be said for any of the ProgressPlay sites.
Most customers have signed up because of very generous welcome offers, offering pure value to punters and casino players. Again, while some of the ProgressPlay brands have okay sign-up deals, you won't fall off your chair when receiving the bonus. On top of this, BetMGM also has very fast withdrawals.
Parimatch
Continuing on the white-label theme, Parimatch is another good alternative to Monster Casino as BV Gaming's products can be found on the site. In case you didn't know, that company has BetVictor as its flagship site and thus knows a thing or two about online gambling - which also shows on Parimatch.
We named the site the best for Aviator, having a dedicated offer for the Instant game, and the rest of the casino section is just as impressive. The sportsbook does not disappoint either, especially thanks to the convenient betting app, and this makes Parimatch a fantastic all-around bookmaker to join.
Virgin Bet
Virgin Bet is one of our favourite betting sites, using Kambi as the sportsbook provider, and we have actually been enjoying our time on the casino section as well. It's just a shame that there is no welcome offer for the casino, but aside from that we really don't have any complaints about the site.
The withdrawal times are incredibly fast, arriving after just a few minutes in our test, and the app is as strong as expected given the LiveScore ownership. There is some great stuff to be found in the promotions section as well, including the popular FIVES game which is free for users to play.
Isak is an experienced content writer with a background in sports journalism. Having focused mainly on football in the past, he certainly knows a thing or two about the betting industry and what makes a good bookie. At BettingLounge, he makes sure that the content is up-to-date and presented in the best way possible.