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RNG Certification

Regulation

What is RNG Certification?

RNG certification is an accredited lab's sign-off that a game's random number generator is statistically sound and unpredictable as described.

ByCasino Desk·Casino & Slots Editor

Reviewed byKris Fawkes·Chief Editor

What it means in practice

RNG certification is the formal sign-off that a game's random number generator has been examined by an accredited laboratory and behaves as described. The review normally covers the statistical quality of the output — whether results are uniformly distributed and show no detectable pattern — the unpredictability of the seed and internal state, and the way the generator is mapped onto reels, cards or wheel positions. Certificates apply to a named software build and are usually paired with a return-to-player verification report. For players, certification is a baseline assurance that the outcome of each round is not being manipulated round by round. It says nothing about whether a game is generous: a certified generator can still sit behind a high house edge, and past results never influence the next spin.

Why it matters

A definition like this one decides what an offer is actually worth. The same wording turns up in bonus terms, on payment pages and in game rules, and it is usually where a promotion’s real cost is hiding — so it is worth reading an operator’s own terms with this meaning in mind rather than the marketing above them.

You must be of legal gambling age where you live — 18 in most markets, 19 or 21 in others. Understanding a term does not make an outcome more likely: casino games are built to return less than they take over time. Set deposit and time limits before you play.

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