Which casinos are really MyStake sister sites?

MyStake has 1 documented sister site, Donbet: both casinos name GTW B.V., a Curaçao company, as the firm that runs them. The 4 casinos that most lists add name Santeda International B.V. instead.

Family: 1 sister site, 1 operator

MyStake
Role
This guide’s subject
Differs
Has Originals and Prediction games; Donbet’s menu doesn’t
Family tree below
Donbet
Role
Sister: shares MyStake’s operator, licence and payment agent
Donbet’s block below

Operator named in both footers

Operator: GTW B.V., Curaçao company 165433
Licence: Curaçao Gaming Authority OGL/2024/250/0115, certificate active
Owner above it: None named

This operator holds no UK licence, so UK licence protections are absent.

Updated 27 October 2026

Independent guide; no casino payments or links.

One sister, four listed brands

Cosmobet’s, Goldenbet’s and Rolletto’s welcomes are shown as their promotions pages print them; for Donbet and VeloBet, the bonus rules sit in their general terms, which also supply the limits. Each of the five caps cash-outs at a weekly €7,500 (€15,000 over a month; Goldenbet counts per 7 and 30 days), cites a Curaçao licence, offers welcomes only to new customers aged 18 or over and turns away some countries, the United States among them.
Casino	Welcome or bonus rules, with wagering	Deposit / withdrawal from	Main difference
Footer names GTW B.V., MyStake’s operator
Donbet	Bonus rules in its general terms: one of each bonus per person, household, device, phone number and payment accountOutside welcomes, winnings from a wagering bonus cash out at no more than 5 times the bonus	€20 in / €20 out	MyStake’s documented sister
Footer names Santeda International B.V.: listed beside MyStake, not its sister
Cosmobet	Four deposits in a row, each from €20, each return a 100% match capped at €500, plus spins worth $0.10 each on The Cosmobet Greatest Catch (50 from €20, 100 from €100, 250 from €200) that lapse after 24 hoursWagering 30× (deposit + bonus), 7 days from each activation; activated after the deposit lands and before the first bet, and only while no other bonus is live; slots only, ten titles excluded; €5 top stake; a withdrawal before the wagering is done cancels the bonus; cash-out from bonus wins capped at 10× the deposit; spin wins cash out up to €100 under clause 7.5, or €500 where deposit spins carry no wagering; the offer leaves open which cap applies	€20 in / €20 out	Four matched stages, each with 7 days to wager
Goldenbet	Its promotions page lists time-limited free-spin campaigns, each with its own deposit band and promo code, and no deposit-match welcomeEach campaign states its own wagering and withdrawal cap; where it is silent, the general terms ask for free-spin winnings to be rolled 10× within 7 days and cap what can be withdrawn at €100	€20 in / €20 out	Campaign spins in place of a match bonus
Rolletto	Paying in €20 or more first earns 150% up to €500; the second deposit earns 100% up to €2,000 and the third 50% up to €3,000 (€5,500 in all); 50 free spins come with the first, then a further 30 per day across five straight days of logging in, all on Rolletto Luck Bonus Buy, every batch expiring 72 hours after it lands, with spin winnings capped at €100Wagering 30× (deposit + bonus) on each of the three deposits, 5 days apiece; activated before play, one bonus at a time; slots only, and some slots may not count; €5 top stake; cancelling takes back the bonus, its winnings and all the bets staked from activation on; cash-out from bonus wins capped at 10× the deposit	€20 in / €20 out	Three matched stages, the first at 150%, each wagered 30×
VeloBet	Bonus rules in its general terms: cash-out from deposit-bonus winnings capped at 10× the deposit that switched the bonus onWinnings from free spins or a no-deposit bonus pay out €100 at most	€10 in / €10 out	Floors of €10, where the other four ask €20
Left out of the welcomes. Donbet’s casino and live-casino welcomes exclude players from 51 countries listed in its terms. Goldenbet’s bonuses shut out the countries its general terms list, Greece and Slovenia among them, and leave Finland’s players only a cashback offer. Cosmobet, VeloBet and Rolletto give no deposit or welcome bonus to players in Thailand, Japan or Finland. Cosmobet’s ten slots that never count towards wagering: Golden Beauty, Bronco Spirit, Reel Heist, Arcade Bomb, Hot 777 Deluxe, Gods of Troy, 1942: Sky Warrior, WBC Ring of Riches, Treasure Mine Power Reels and Classic Joker 6000.

Sources: promotions pages, general terms.

mystake.com

Is Donbet the only sister, and who runs the pair?

Both casinos name GTW B.V., and the licence records disagree.

Payment agent: CYGTW LTD (Cyprus company HE 462903) handles the money side for both casinos.
GTW registered address (Donbet footer): Zuikertuintjeweg Z/N, Curaçao.
Licence status The two papers differ: The 21 September 2026 registry (new tab) lists a 24 June–24 December 2025 term and “Assessment in progress”. Donbet’s certificate says “Active”, granted 1 July 2024.

GTW B.V.
Named by MyStake and Donbet
- MyStakeThis guide’s subject
- DonbetSame operator
Often listed with MyStake. Not a relationship their own documents name.
Santeda International B.V.
Named by the four listed brands
- RollettoDifferent operator
- VeloBetDifferent operator
- CosmobetDifferent operator
- GoldenbetDifferent operator

The operator each brand’s own documents name Named in the brand’s own documents Paired by lists, not by documents

Why do lists add more casinos like MyStake?

Lists pair MyStake with Donbet, run by the same operator, and with four brands run by another.

Donbet

Donbet runs a sportsbook beside its casino, with live tables, mini games, virtual sports, racing and e-sports. Donbet’s terms make you responsible for checking your local gambling laws.

donbet.com

Bitcoin.com News (news.bitcoin.com) linked all six to Santeda in June 2026, reporting a licence move to GTW B.V. and both firms’ dissolution. No company-registry record was captured. The four footers name Santeda (company 151296, licence OGL/2024/1798/1048). Its certificates say “Active”, the registry “Assessment in progress”.

Rolletto

Eight languages, Greek and Czech among them.

VeloBet

Two weeks’ notice before new terms apply.

Cosmobet

A Tournaments tab with casino and sports leaderboards.

Goldenbet

Sport heads the menu, ahead of casino and instant wins.

goldenbet.com

How do withdrawals work at MyStake’s sister?

Donbet publishes these withdrawal rules, and an ID check can delay your payout.

Before a payout

If you withdraw a deposit without wagering it once, Donbet may deduct 20%. Its KYC policy asks for identification plus evidence of your home address dated within the last three months. Visa and Mastercard cards are the only deposit methods its terms name.

Speed and size

Donbet processes bank transfers within three banking days, but that isn’t an arrival deadline. You can’t withdraw USD this way. A single bet or spin pays €100,000 at most, jackpots excluded. A win above €15,000 may be paid in monthly parts of no more than €15,000, and intermediary bank charges stop at €16.

Idle accounts

If you don’t log in for twelve months, Donbet may take €10 a month, or the balance if that’s smaller.

Where can you take a complaint about Donbet?

To its support team first. Past that, its dispute page names the licensing regulator listed on its website, or any independent body or gaming authority, and court cases belong in Curaçao, under Curaçao law.

Donbet can set aside a complaint you raise more than two months after the problem, and its server logs are the final word on a game. GTW B.V. isn’t on the enforcement register Curaçao dated 14 September 2026.

Does your account history follow you to Donbet?

The documents don’t confirm that your MyStake login, balance, bonus history or ID check carries over to Donbet.

Settle MyStake first
Finish any withdrawal, check or complaint with MyStake itself, and keep the messages.
Exclusions
Donbet takes self-exclusion requests by email for half a year to five years, and closes the account for six months if you name no period. Until Donbet confirms in writing that your MyStake exclusion covers it, assume it doesn’t, and don’t treat Donbet as a way back in.

Is a limit, break or exclusion the reason you’re looking?

For adults 18 and over. If you’re looking for a site like MyStake to win back losses, or because an account was limited or closed, that’s the moment to stop. A sister site doesn’t undo a limit you’ve set. The June 2026 report said these brands relied on affiliate marketing aimed at people who had excluded themselves.

Free, confidential support runs day and night: GamCare’s National Gambling Helpline on 0808 8020 133 for England and Scotland, or the NHS Wales gambling helpline on 0808 2819 265. If you’ve joined GAMSTOP, add blocking software such as Gamban to every device and ask your bank for its gambling block. Safer gambling: each block, step by step.

What do people still ask about MyStake sister sites?

Is Freshbet a MyStake sister site?

Not on the documents: its Curaçao certificate names a third company, Ryker B.V., though the June 2026 report grouped it with them.

Sources

No account was opened, no offer claimed and nothing scored.

MyStake (mystake.com): footer, copied by hand; homepage image.
Donbet (donbet.com): footer, terms and policy pages; menu.
Cosmobet, Goldenbet, Rolletto, VeloBet (cosmobet.com, goldenbet.com, rolletto.com, velobet.com): footers, terms and promotions pages.
Curaçao Gaming Authority: donbet.com (new tab) and freshbet.com (new tab), cosmobet.com (new tab), goldenbet.com (new tab) and velobet.com (new tab) certificates;registry (new tab), enforcement register (new tab).
Bitcoin.com News, June 2026 (news.bitcoin.com); NHS gambling help (new tab); NHS Wales helpline (new tab).