How we research casinos

By sistersites.bet editorial team · Last updated: 15 Oct 2026

sistersites.bet shows which online casinos are run by the same company (sister sites) and what independent sources say about them. This page explains exactly how we do that, including the things we don't do.

Who writes our pages

Our pages are written and checked by the sistersites.bet editorial team. We don't publish under individual pen names. The team is six people.

Overview or review: what the label means

Overview: we have not opened an account, deposited or withdrawn. The page brings together the licence register, our own visit to the casino's website and independent third-party sources. Most of our casino pages are overviews, and every one is labelled as such at the top.
Review: we test casinos hands-on: we play at the casino and check the site ourselves. Only pages built on that testing are called reviews. An overview has not been tested this way.

We don't publish ratings or scores. When we test a casino, we make an internal assessment, and that assessment decides the order of our lists. Where we quote a score, such as the casino.guru Safety Index or a Trustpilot TrustScore, we name the source and the date.

How we check a casino

Operator and licence. We look the brand's domain up in the regulator's public register, for example the Anjouan Offshore Finance Authority, the Curaçao Gaming Authority, the UK Gambling Commission or the Malta Gaming Authority. We record the licence holder, licence number, status, expiry date and the date we checked. If the register and other sources disagree, we go with the register and say on the page that sources differ.
Site visit. We open the casino's website in a normal browser and note what it shows publicly: the company name and number in the footer, licence details, sections (casino, live, sport), contact channels and support addresses. For an overview we don't create an account. If a site blocks our region, we say so.
Domain check. We record redirects, mirror domains and parked or for-sale domains, so readers can tell the real site from copies.
Third-party sources. We read independent reviewers and player-feedback platforms, mainly casino.guru (safety index, terms analysis, complaints, support tests), Gamecheck (fake-game detection) and Trustpilot, plus forums and other review sites. Every fact we take from them is logged with its source link and date. We treat low-trust or copy-heavy sites as weak evidence and say so.
Writing. We write in our own words and don't copy text from other sites. Every fact on a page must come from one of the sources above. Anything we can't verify is left out, not guessed. Each page lists its sources at the bottom.

Sister sites: how we decide two casinos are related

We call casinos sister sites when the licence register lists them under the same licence holder. Where independent sources report a shared platform, cashier or terms, we say so, but we only call it a shared platform when a source names it.

Bonuses and offers

Bonus details appear only when a named source backs them, with the source and date shown. Offers change often, so always check the casino's own terms before you claim anything.

Affiliate disclosure

sistersites.bet is free to use. We may earn a commission when you sign up at a casino through links on our site. Depending on the casino, that commission is a share of revenue, a one-off payment per new player (CPA), or both. No casino pays for its position in our lists. Commercial relationships don't change the facts we report: licence status, complaints and negative findings appear whether or not we have a commercial relationship with the casino. The order of our casino lists is based on the internal assessment we make when we test.

Updates and corrections

Every page shows a "Facts verified" date. We only change that date when we have actually rechecked the facts, not to make a page look fresh.
We recheck licence data against the registers every month.
When we find an error, we correct it and note the change in the page's changelog. Example: when register checks showed that dozens of brands we had listed under Cerberlot N.V. belong to other operators, we moved them to the correct operator pages and redirected the old addresses.
Found a mistake? Email us at contact@sistersites.bet.

Responsible gambling

Gambling can cause harm. We point out weak or failed self-exclusion tools where sources report them. See /responsible-gambling/ for help and blocking tools. You must be of legal age and allowed to gamble where you live. Using a VPN to get round a casino's country block usually breaks its terms.

What we don't do

We don't claim hands-on testing on pages labelled Overview.
We don't publish our internal assessments as ratings or scores.
We don't use invented author names.
We don't publish facts we can't source.