Monster Casino
sister sites
Monster Casino sister sites include Casino Kings. These casinos are recorded under ProgressPlay Limited, company registration C58305.
Monster Casino’s sister sites
1 sister site in our coverage. This is an operator connection, not a ranking or a recommendation.
ProgressPlay as the link
Monster Casino's UK homepage, recorded in September 2026, names ProgressPlay Limited as the operating company. Its sister casino lists the same company, and that is what connects the two brands. ProgressPlay is registered in Malta, and the link comes from the shared operator rather than shared branding.
Apart from operator and licence details, the Monster Casino records cover only its welcome offer and support. They do not describe shared accounts, shared verification or network-wide self-exclusion, so none of these should be assumed.
A welcome offer with a network limit
The September 2026 record of the welcome package shows a deposit bonus combined with free spins on Starburst and a £20 minimum deposit. Wagering was 10× the bonus, free-spin winnings had to be wagered separately, and both parts had a maximum conversion cap.
For sister sites, the key condition is that the offer is limited to five network brands. This suggests the welcome offer can be claimed at only a limited number of brands in the network, so a claim elsewhere could affect eligibility here. The records do not say which brands count towards that limit.
Other conditions attached to the offer
Deposits made with Skrill or Neteller were excluded. Games contribute at different rates, and only selected games count. The bonus expires after 30 days and free-spin winnings after seven. Requesting a withdrawal cancels any active or pending bonus.
These are Monster Casino's own recorded terms. A sister brand run by ProgressPlay may set different expiry periods, payment exclusions or conversion caps, even though the operator is the same.
Checking with support
Live chat was advertised as open 24/7, and email is also available. Because the terms mention a network limit without naming the brands involved, support is the practical place to ask how an existing account at a sister site affects the welcome offer before depositing.
It is worth keeping the written reply, because the recorded terms do not answer this question on their own.
Sources for this family
The links below support the operating-company connection. Observation dates describe the saved evidence, rather than a new check today.
- Monster CasinoOperator source ↗ Observed 8 September 2026
- Casino KingsOperator source ↗ Observed 8 September 2026
Frequently asked questions
Which Monster Casino sister sites are covered by Payrot?
Payrot covers one Monster Casino sister site: Casino Kings. Both name ProgressPlay Limited (Malta, registration C58305) as operator. That shows the same company runs them, not who owns them.
Does sharing an operator make the account rules identical?
Sharing ProgressPlay Limited as operator does not establish identical account rules. Payrot has not confirmed shared logins or balances for Monster Casino.
Is Monster Casino's welcome offer limited across network brands?
Yes. Its terms, as seen in September 2026, say the offer is limited to five network brands and that asking for a withdrawal cancels active or pending bonuses. The five brands are not named.
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