Game fairness: how casino games are tested, and by whom

The question behind the question

When players ask whether games are rigged, they usually mean something more specific: is the outcome decided by a process nobody has checked? That is answerable, and the answer is a document rather than a reassurance.

Games at a registered operator must be verified by an accredited independent laboratory before going live. The laboratory examines the random number generator for genuine unpredictability and confirms that the advertised return matches the mathematical model the game actually runs. Neither of those is a matter of opinion, which is why we score the certificate rather than the claim.

What a return-to-player figure does and does not tell you

A game returning 96 percent is designed to pay back 96 dollars for every 100 staked across an enormous number of spins — often millions. It is a description of the long run and of the mathematics, not a forecast for your afternoon.

What it genuinely gives you is comparability. Between two slots, the higher published figure is the better structural deal, and the difference compounds over time. What it cannot do is tell you anything useful about the next hundred spins, which is exactly the interval players tend to read it as covering.

This is why we score whether the figure is independently verified rather than whether it is high. A high number nobody has checked is a marketing claim.

The laboratories, and what each is for

The AGCO keeps a public list of the laboratories it has registered to certify games and random number generators for Ontario play. When we read it there were eight, and the three a Canadian player is most likely to recognise are Gaming Laboratories International, eCOGRA and BMM North America. The others — Gaming Associates Europe, Eclipse Compliance Testing, Global Lab, Riskcherry and Quinel — do the same job with less public profile, and the AGCO notes that more may be added.

eCOGRA is worth a specific note, because a confident falsehood about it circulates widely: that it dissolved in 2021 and that no active certifications exist. It has not. It is operating, headquartered in the United Kingdom, and offers RNG and RTP testing, alternative dispute resolution and a seal programme. We mention it here because it is the clearest illustration of why we read primary documents and never other affiliate sites.

Live dealer games are a different question

With a physical wheel or a real deck there is no random number generator to test. What gets audited instead is the equipment, the studio procedures and the software that records and settles the result.

That is a broader and harder thing to inspect than a piece of code, so the verification question shifts: not "was the generator tested" but "who audits the studio, and how often". Worth asking, and worth noticing that far fewer sites can answer it.

Why no operator here scores full marks on fairness

Because the top of this criterion is reserved for a certificate we have opened, and we have not been able to open one for any operator on the site. Every registered operator instead scores eleven of fifteen: certification by an AGCO-registered laboratory is a written condition of its registration, so the testing is documented even though the document is not ours to read.

That middle position is deliberate rather than a compromise. A regulator's published requirement plus a register entry proving the operator is bound by it is genuinely stronger evidence than a marketing claim, and genuinely weaker than a certificate. Treating it as equal to either would misdescribe what we know. An operator with no Canadian registration and no certificate scores zero, because there nothing obliges testing at all.

The remaining four points are the cheapest thing in this industry to earn, and the obstacle is publishing rather than testing: none of the four accredited laboratories maintains a public certificate directory, and operator-hosted copies usually sit behind a login. A certificate at a stable public URL moves the score the same week, and every change appears in corrections.

How to check for yourself

Look for a named laboratory rather than a logo, since a logo is trivially copied. Find the certificate itself and read the date on it — a certificate from several years ago covers software that has since been updated. Confirm it names the operator or the platform you are actually playing on, not a sister brand.

If none of that is findable, you have learned something: not necessarily that the games are unfair, but that fairness here is a claim you are being asked to take on trust. Our sources page lists precisely what we look for.