Mr Luck's sister sites include fellow Jupiter Gaming Limited (UKGC: 67098) brands such as Lad Bet, Dream Jackpot and Red Casino, alongside a number of other brands that all share the same licence.
Mr Luck has previously been operated by AG Communications Limited (UKGC: 39483), trading in both the sports betting and casino markets. That is no longer the case.
Now, Mr Luck is owned and operated by Jupiter Gaming Limited (UKGC: 67098). Jupiter only secured its licences in August 2025, making it a fairly new player in town but a player it is.
Already, it has its fingerprints across a number of different brands. Some, like Mr Luck, brought back from the brink, and others being brands that have entered the market for the first time.
What your should expect to see from a company that wants to blend a mobile-first and customer-first offering is a series of solid sister sites. Let's see if that is indeed the case.

Forget what you previously knew about the AG Communications version of Mr Luck. It is a different platform now.
Jupiter Gaming’s Mr Luck is a dedicated casino site that boasts over 500 games for customers to explore. The site is smartly designed, with the aesthetic of the platform positioned towards an upmarket audience. This comes courtesy of a dark background that is complemented with flashes of striking colour, namely bright greens. Importantly, these are used sparingly, with the design choices aiding usability of the site.
The core menu structure is well put together and easy to navigate, but the headline of Mr Luck is the game lobby itself. With a text search functionality alongside game type sub-headings that are positioned in a horizontal scrollbar, the site is easy to manoeuvre.
Once into the game titles themselves, you will find plenty of household recognisable titles, which is a natural consequence of some of partnering with big-name software providers, most notably Pragmatic Play.
All told, there are over 500 game tiles to play. Each of them is neatly positioned and easy to interact with courtesy of their large size.
Is Mr Luck the all-in-one platform you've been looking for? Probably not, no. It is, however, a neat and tidy casino platform that boasts some big-name titles.
Will any of the Mr Luck sister sites go the extra mile to deliver more?
You would be forgiven for not immediately pegging Red Casino as one of Mr Luck's sister sites. Red Casino immediately gives of a "cheaper" feel, owing to the colour scheme, the graphics it opts for and the fact that the "Deposit" text in the top right corner doesn't overlay in the button properly. The latter point is not great, especially considering we're testing it on a modern mobile device.
Beneath that top-level overview look and feel, though, there are a host of similarities between Red Casino and Mr Luck. That starts with the deposit options - debit card and Apple Pay - and largely runs across the game lobby too.
The basis for navigation is the same, with a footer panel offering manoeuvrability around the wider site and, at the top, a scroll bar that enables casino category browsing. Like at Mr Luck, this includes a search bar, which enables text inputs.
There are only two software providers serving up games - compared to three at Mr Luck - but it doesn't have a hugely material impact on the overall game count.
Take one glance at King Casino and you will realise that it is a Mr Luck sister site. Sure, there are some subtle differences between the brands but every critical part of the offering are close to being identical.
Take the game lobby, for instance. Like Mr Luck, King Casino also boasts in excess of 500 titles, with a variety of game types featuring amongst them. Those types can be narrowed down using a familiar feeling scroller that runs across the top of the game lobby itself.
Admittedly, the text search bar is positioned different at King Casino, sitting beneath the aforementioned scroller, rather than as part of it. It functions the same way, though. The same could be said for the wider site navigation, with the footer panel and main menus sharing a structure.
The only really notable difference is the colour scheme. Mr Luck comes out on top there, in our scoring at least, with the black background and sprinkling of green highlighting “up our street”. King Casino, meanwhile, opts for a two-tone grey style, with an occasional dash of yellow.
Lad Bet is hands down the best Mr Luck sister site that is available right now. At least that is our opinion.
The 2026-launch is a sportsbook, first and foremost, which is a clear step away from what Mr Luck is. It does, however, still offer punters the avenue to dabble in a comparable casino space; it just so happens this link is a bit weird.
Instead of playing in the Lad Bet casino, you have to leave the Lad Bet domain and instead login to the Lad Casino domain; this utilises the same login credentials and can be accessed from the Lad Bet main menu. When at Lad Casino, the structure and game offering is very similar to Mr Luck.
So, with the comparable casino box ticked, what is the Lad Bet sportsbook like?
It's certainly not perfect, with the absence of any horse and greyhound racing a big miss. Even without those two sports, there are still close to 30 sports covered, including the ever-popular football, which offers 350 different markets. With betting margins at just over 6%, the Lad Bet stands up to a lot of other players in the market.

Ashley, an Ipswich Town fan, is an experienced content writer in the sports & betting space, who also has an extensive background in data analytics. Those skills combine here to allow for unique angles to be taken across a host of topics.