Introduction
Concept of Sister Sites
Sister sites are the online casinos that operate under the one family company. Imagine them like sub-companies, sub-brands under a mother brand. They may have distinct brand strategies and game selection but might share similar characteristics, like the same provider, similar benefits, security systems, terms and conditions, and most importantly, the team that operates them.
Why Players Seek Sister Sites
- New Bonuses – They offer different bonuses, like welcome bonuses, that you get for registering, free spins for giving an honest review, etc.
- Game Variety – You can find a wide variety of games, like Slots, Live Casino, Sports, and many more.
- Different themes – Game themes vary for different providers and game types.
Key Factors Players Should Consider
Before you register and start to play, check the terms and conditions section, and make sure that the terms are fair. Become aware of which licensed casinos own and whether or not their webpage is secure. Explore deposit and withdrawal methods, determine if their web pages are compatible with mobile devices, and determine if they provide responsive customer support.
As we’ve introduced the Sister Sites concept, their features, and the things that players should look for, now it is time to dig deep and take a look at one of the Sister Sites’ main casinos, and then provide an overview of the others.
DonBet Casino

One of the sister sites’ main casinos, “DonBet,” was created in 2023. Even though the casino doesn’t have a long history, it gained popularity and became especially wanted by UK players. The casino holds the Curacao license and operates under the Santenda International B.V. company.
The casino positions itself as a mafia-related casino. The main theme of the webpage is mafia and gangsters, making you feel like Don Corleone. The page reveals its theme by the colours, game icons, and characters used in bonus systems. It also has special bonuses like a mafia room. The main visual characteristic of the mafia room is a well-dressed man, with golden jewellery and a watch, with his raised eyebrows, you get the feeling that you are in danger.
Game Selection & Features
Donbet offers sports games, Slots, live casino games (live roulette, blackjack, poker, live baccarat), mini-games, virtual sports, racing, and Esports.
DonBet partners with leading game providers, such as Pragmatic Play, Play’n Go, Gameart, Progaming, Platypus, and many more. You can even play exclusive games, like “Candy Rush” on DonBet’s webpage.
Bonuses and Promotions
Dobet spoils its customers with welcome bonuses, free spins, cashback, and loyalty rewards. Donbet has different welcome bonuses for casinos and sports. The casino welcome bonus is 150% of your deposited money up to 750 euros, and 50 free spins. The sports welcome bonus is 120% of your deposited money up to 600 euros. The casino also offers a special crypto deposit bonus if you deposit for the first time using listed cryptocurrencies. If you are a loyal customer, you can even get a loyalty bonus of 10% cashback. And you also easily get free spins if you just write an honest review.
DonBet has a VIP Mafia Room for its VIP customers. In the mafia room, there are 8 levels. You advance to each level by accumulating points. On each level, you get access to special awards.
User Experience & Mobile Gaming
The DonBet Casino offers an easy navigation system. The web page has dark colours and a mafia theme. It has high-quality graphics and an easy layout, the webpage reloads instantly, and transitions between pages are smooth and seamless. The main page is very intuitive. The main page represents all the games that casinos offer; therefore, it is easy to find the game that you are looking for. All the vital information is presented on the main page. By scrolling down, you get access to the company’s information, how you can get help, and how you can contact them. You can smoothly search in the search bar and log in to the casino.
You get the full experience on the mobile screen as well as on the big screen. You can access the casino by Google Chrome, Safari, and other browsers. The casino doesn’t have an app for iOS or Android users, but you can get the seamless experience on a web browser, too.
Security & Licensing
The casino holds the Curacao Gaming Control Board’s license. DonBet cares about its users and provides special tools for responsible gaming. In the responsible gaming section, you can form an opinion on how the casino takes care of its customers. Other than verbal communication, casinos use deposit limits and self-exclusion. You can set limits on deposits and control your spending in online casinos. Other than that, you can contact the casino via their email, and lock your profile from 6 months to five years.
You can deposit money via various methods: Visa or Mastercard (Credit or Debit card), SEPA, E-wallets (Skrill, Payop), and cryptocurrencies. The minimum amount is 20 euros, and the maximum amount depends on the deposit method you choose. The minimum amount of withdrawal is 20 euros, and the maximum is dependent on the method you choose.
Sister Sites Overview
Goldenbet

Goldenbet was launched in 2021. Its parent company is Santenda International S.V., the same company that operates the DonBet and other Sister Sites. Goldenbet holds the curacao license.
The casino’s main theme is sports. Just looking at the webpage, you see that the casino offers a variety of sports games, but also has Slots and live casino games. Goldenbet is connected to Donbet by the parent company, they share the same payment methods, game providers, terms and conditions (overall policies), user experience, etc.
Game Selection & Features
The casino provides over 1000 slot games, and live casinos (Blackjack, Roulette, Baccarat, Poker), and if you are eagerly enthusiastic about sports, the casino offers sports betting for football, basketball, racing, tennis, MMA, etc. They also give live betting options for sports games and even on Valorant, League of Legends, and other graphical online games.
Goldenbet collaborates with leading game providers, such as Evolution Gaming, Gaming, Play’n Go, Pragmatic Play, etc.
Bonuses & Promotions
Goldenbet presents different kinds of promotions for different game types. For casinos, they offer a Casino welcome bonus of 100% of your first deposit, up to 500 EUR, USD, OR GBP. There is a second deposit bonus, too, which is rare for online casinos. Surprisingly, you can also get a third deposit bonus. Other than the deposit bonuses, there is a 10% cashback system.
You will get a welcome bonus in sports games, too, but there are other distinct promotions, such as an Esports welcome bonus and a cashout.
User Experience & Mobile Gaming
Goldenbet has an intuitive and easily navigated interface. The game sections are logically placed at the top of the main page. You get instant access to the game types that you want. On the landing page, there is a list of game types offered by the Casino, top games, and promotions sections. The redirection to another page happens in seconds.
Even though the casino doesn’t have iOS and Android apps, it is still compatible with mobile devices and offers a full gaming experience on mobile screens, just as on big screens.
Security & Licensing
Goldenbet’s parent company, Santander International B.V., holds a Curacao eGaming license. They have various security measures, like SSL encryption, by which your personal information is safe and not available to third parties. The webpage partners with safe and reputable transaction companies, like Visa, Mastercard, etc. The casino also offers tools for responsible gambling (self-exclusion).
There are various payment methods available, like Visa and Mastercard credit or debit cards. Also, the casino offers other methods, like Astropay, Jetobank, Cryptocurrencies, and other payment methods, depending on your country of residence, so it varies.
The minimum amount of withdrawal is 20 euros, or equivalent in other currencies. Higher withdrawal limits depend on the payment method you choose. Technically, it takes from 24 hours up to 3 days to process your withdrawal request.
You can contact the Donbet casino in various ways. There is a live chat option presented on the webpage, or you can contact them at their email address: [email protected].
Mystake

The casino “Mystake” was launched in 2020 under the “Santeda International B.V”. It holds the Curacao eGaming license.
Game Selection & Features
On Mystake Casino’s webpage, you can play different game types, like live casino, slots, sports games, and mini-games. There are also exclusive games available, including Penalty, Burger Win, Tower Rush, etc.
Bonuses & Promotions
The best part is that the casino has many bonuses and promotions. You can get casino welcome bonuses, sports welcome bonuses, first week’s cashback, loyalty deposit bonus, and many more.
The casino even has a VIP loyalty system, where you can earn points and advance to higher levels. In VIP loyalty, there are 10 levels. On each level, you get special promotions and awards, like free spins, weekly cashback, rakeback, and even a VIP manager.
User Experience & Mobile Gaming
The casino has an intuitive webpage. It’s easy to navigate and find the sections you are looking for. At the top of the landing page, there are different game sections. By clicking on it, you’ll be redirected to the special page, where all available games of the category will be presented. The redirection happens instantly, and the reload time is low.
Even though Mystake doesn’t have an iOS or Android mobile app, it is compatible with mobile screens and big screens.
Security & Licensing
Mystake operates under its parent company and is licensed by the Curacao Gaming Control Board.
There are various payment methods available, like Visa, Mastercard, e-wallets, and cryptocurrencies. The minimum payment for a deposit is 20 euros or equivalent in other currencies. The maximum amount of deposit depends on the payment method you choose. The same goes for withdrawal, the minimum amount is 20 euros or equivalent in other currencies, and the maximum amount depends on the payment method you choose.
The support team is responsive. You can contact them via live chat or text them at their email address: [email protected].
Conclusion
Casino Sister Sites unite different casinos that operate under the same parent company, called “Santenda International B.V”. All the Sister Casinos share the same qualities, like a wide variety of games, distinct bonuses, responsive customer support, reliable payment methods, security systems, and other vital features.
Each Sister Site Casinos have an exclusive bonus system, exclusive games, and a wide game portfolio. But each one of them refers to different player types. For example, if you prefer sports betting and sports games, Goldenbet is the right choice for you. If you are a slot lover, the casino mistake is right for you.
Sister Sites Casinos operate under a Curacao license. They use various tools for a safe gaming environment, like SSL Encryption, valid payment methods, responsible gaming tools, responsive customer support, etc.
Thanks to the Sister Sites, you can explore various casinos and choose the one that best fits your preferences.
F.A.Q
- Who is the mother company of all the sister site casinos?
The mother company is Santenda International B.V.
- Which license do sister site casinos hold?
The Sister Sites operate under a Curacao license.
- Is there a welcome bonus on DonBet?
Yes, there are two welcome bonuses: the Casino and Sports welcome bonuses.
- Does DonBet have VIP awards?