What is RNG certification in online casino games?

RNG certification is independent laboratory testing that confirms a game's Random Number Generator produces statistically unpredictable, unbiased outcomes, and that its real return matches the stated RTP. Accredited test houses such as GLI, BMM, and eCOGRA issue the certificates that regulators and operators require before a game goes live in most licensed markets.

Certification differs from provably fair. RNG certification is a one-time, expert audit of the randomness engine and math model by an accredited lab; provably fair lets a player cryptographically verify each individual round in real time. Strong content backs both, because they answer different questions — system integrity versus per-round trust.

For an operator's compliance team, a current RNG and math certificate is part of due diligence: it confirms the game behaves as documented and that the published RTP is the real long-run return, not a marketing figure.

CROCO Games & RNG certification

CROCO Games builds every title on a tested RNG and publishes RTP on each official game page. Its slots, crash, and instant games are independently tested for RNG behaviour and math accuracy; full RNG and math certificates are available to operators and aggregators on request under NDA. CROCO does not publish certificate numbers on marketing pages or claim approvals it does not hold.