Gambling terms, explained straight

Online Gambling & Industry

RNG certification

RNG certification is the process where an independent lab tests a random number generator used in online gambling to verify its outputs are random, unpredictable, and meet regulatory standards.

Standards referenced
ISO/IEC 17025:2017, ISO/IEC 17020:2012, ISO/IEC 17065:20122
Regulator (GB)
Requires RNG test results for compliance with RTS and testing strategy3
Regulator (Malta)
Requires RNG Test Certificate from an EU/EEA-based lab for new games6

Key points

  • A third-party lab reviews RNG documentation or source code and runs statistical tests for randomness and bias.15
  • In Great Britain, RNG output must be acceptably random, unpredictable, and use non-predictable seeding.45
  • If the RNG meets jurisdictional requirements, the lab issues a certification report or certificate of compliance.17

Where this term is used

Not the same as

  • RNG meaning — the device or algorithm itself, whereas RNG certification is the testing and approval process applied to that RNG
Online RNG slots Explains how RNGs determine symbols in slot machines. Online RNG full form Gives the full form of RNG and its common meanings. Online Gambling commission deposit limits A deposit limit restricts how much a customer can put into an online gambling account during a chosen period Online Wagering bonus meaning A wagering bonus is promotional money or free bets Online Wagering meaning in betting Wagering means staking money or value on an uncertain outcome Online Casino wagering requirement A casino wagering requirement is a promotional condition

Sources

  1. RNG Certification | Learn More ecogra.org Defines RNG certification as independent testing and certification.
  2. eCOGRA Certification | International Test Lab | Learn More ecogra.org Lists ISO/IEC standards used in eCOGRA conformity assessments.
  3. Gaming machine and remote games information ... gamblingcommission.gov.uk States GB requirement for RNG test results under RTS and testing strategy.
  4. Regulatory returns guidance - 2 - Random number ... gamblingcommission.gov.uk Specifies that RNG output must be acceptably random with uniform distribution and unpredictability.
  5. Testing strategy for compliance with remote gambling and ... gamblingcommission.gov.uk Describes the testing strategy and requirement for non-predictable seeding.
  6. [PDF] Approval of New Games mga.org.mt Requires an RNG Test Certificate from an EU/EEA-based lab for new games in Malta.
  7. GLI-19 STANDARDS FOR INTERACTIVE GAMING SYSTEMS gaminglabs.com Notes that a certificate of compliance is issued if the RNG meets requirements.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.

Written and maintained by Ellis Warrender, writer and maintainer.

Last updated 28 July 2026. Spotted an error? Tell me and it gets fixed and logged on the corrections page.