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. 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 from the free bet. 20 Wager Free Spins on Book of Dead. Bonus valid 48 hours from receipt. Max conversion: £100. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full terms apply -
New customers online only. Only valid with code B10GET200 on registration. £10 min stake on slots and receive 200 Free Spins on The Goonies Megaways. 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. -
18+ New customers only. Wager £20 or more on Midnite Casino within 14 days of sign-up. Get 100 Free Spins to use on selected games, valued at 10p and valid for 7 days. T&Cs apply. BeGambleAware.org -
New UK customers only, 18+. 100% bonus on your first deposit up to £50. First deposit must be a minimum of £10; any amount deposited over £50 will not qualify for the bonus. Bonus wagering requirement is 10x the value of your first deposit and must be completed within 60 days of activation via the “My Bonuses” section of your account. The bonus is released in 10% increments to your Main Account balance. Full T&Cs apply. -
New cust only. Opt-in required. Time to deposit/wager 7 days. Deposit £10 & wager 1x on casino games (wagering contributions vary) for 200 Free Spins worth 10p each on Big Bass Splash. 3 day reward expiry. 18+. T&Cs apply. -
New cust only. Opt in & deposit £10+ in 7 days & wager 1x in 7 days on any eligible casino game (excluding live casino and table games) for 50 Free Spins. Wagering contributions vary. Free Spins worth 10p each on Big Bass Splash. 3 day expiry. 18+. T&Cs apply. 18+ GambleAware.org. -
All British Casino Alternative100 Free Spins on Le Bandit + 10% Cashback Always
Claim OfferSee MoreNew players only. Deposit & wager at least £10 to get free spins. Free Spins winnings are cash. No max cash out. Eligibility is restricted for suspected abuse. Skrill deposits excluded. Free Spins value £0.10 per spin. Free Spins expire in 48 hours. Full T&C's apply. GambleAware.org. -
Lottoland AlternativeStake £20 Get 100 No Wagering Free Spins on Big Bass Bonanza
Claim OfferSee More18+, sign up, deposit £20 or more directly via the promotion page and stake £20 on Big Bass Bonanza, and receive 100 Free spins on Big Bass Bonanza. 7 days expiry. Ends 31/12/25 at 23:59 GMT. Full T&Cs Apply. begambleaware.org. -
New UK customers only. Wager £20+ on selected Pragmatic Play slots to get 50 Free Spins daily for 5 days. Spins expire 24 hrs after issue. Max Payouts & Full T&Cs apply.
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18+ New customers only. Bet £20 (or more) EVS (2.0) or greater Get 2 x £5 Free Bets. 1 x £5 Free Bet paid automatically & following £5 Free Bet after 24hrs. Min Free Bet odds 4/1 (5.0) on accumulators Trebles & upwards. Expires after 24hrs. Full T&Cs apply. GambleAware.org -
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 - 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 from the free bet. 20 Wager Free Spins on Book of Dead. Bonus valid 48 hours from receipt. Max conversion: £100. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full terms apply
- New customers online only. Eligibility restrictions apply. Bet min of £/€10 at odds of 1/1 (2.0) or greater across sports or racing (if EW then min £/€10 Win + £/€10 Place) within 7 days of registration. Receive £/€20 Tote Credit and £/€10 Free Sports Bet. Qualifying bet is the first racing pool or sports bet added to the bet slip. 7-day expiry. 18+. Full T&Cs apply. Gambleaware.org.
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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. Valid for 7 Days from receipt. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply - 18+ New customers only. Place a £10+ bet at min odds 1/1 (2.0) within 14 days of sign-up. Get £30 in Free Bets, valid for 7 days on selected bets only. Free stake not returned with winnings. T&Cs apply. BeGambleAware.org
- New cust. Deposit £10+ in 7 days & bet on sports. Min odds apply. Reward = 4 x £10 Free Bets (2 x £10 Bet Builders & 2 x £10 Sports bet). Valid 7 days. Free bets not valid on e-sports & non UK/IE horse racing. 18+. T&Cs apply. GambleAware.org.
- New reg only. Claim by placing a min deposit £10 via the promotions page within 7 days. 7 days to stake max £10 in-play, min odds 1/1 (2.0). Max. extra winnings £100. Once claimed, 7 days expiry. Cashed out, System & EW bets do not qualify. Profit Boost cannot be used on e-sports and non-UK/IE horse racing. Other Promotional Play Restrictions Apply. T&Cs apply. 18+ GambleAware.org.
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Cashback is cash with no restrictions. Cashback applies to deposits where no bonus is included. T&C's apply. - Opt-in required. Bet £25 on 3+ selection ACCAs at 3/1+ odds (Sat–Thu, settled by 22:59). Get £8 in weekly Free Bets (£5 Fri, £3 Tue). Free Bets at 1/1+, stake not returned, 7-day expiry. Cash bets only. Exclusions apply. T&Cs apply.
- New UK customers only. Register with promo code 20x5fb and place a £20+ bet on any selection at minimum odds of Evens (2.00) to receive 5 x £5 Free Bets. The first Free Bet will be credited once your qualifying bet settles, with each subsequent Free Bet becoming available 24 hours apart. Free Bets expire 24 hours after being awarded. T&Cs & Maximum Payouts apply.
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.