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Data & iGaming Certification Services

RNG Testing

  • General

    eCOGRA employs a testing methodology for RNGs that holds approval from prominent online gambling jurisdictions and undergoes continuous evaluation and enhancement by tertiary educational institutes worldwide. Our testing approach is meticulous, statistically sound, and incorporates advanced automation to ensure a streamlined and robust experience for our clients.

  • Scope

    The primary role of a test lab is to verify and validate the Random Number Generators (RNGs) employed by online gambling mechanics. The assessment of RNGs in online gambling is crucial for ensuring the fairness and integrity of the games. RNGs play a pivotal role in generating outcomes that are both unpredictable and unbiased, contributing significantly to the maintenance of a fair gaming environment.

  • Process

    • Independent Certification: Online gambling platforms typically engage with third-party test labs that specialise in testing and certifying gaming software and RNGs. eCOGRA is an independent test lab with no affiliation to the gambling platform, ensuring unbiased assessments.
    • Source Code Review: We start by reviewing the source code of the RNG implementation to ensure the RNG algorithm is properly designed and follows industry standards for randomness, such as being based on well-established cryptographic algorithms.
    • Statistical Analysis: eCOGRA performs extensive statistical analysis on the output of the RNG over many iterations. This includes analysing the distribution of numbers generated to ensure they appear uniformly and without any discernible patterns. Deviations from expected statistical properties could indicate a biassed or flawed RNG.
    • Seed Generation: RNGs require an initial seed value to start generating random numbers. We evaluate how the seed values are generated and whether they are adequately unpredictable. A secure method for seed generation is crucial to prevent predictability of outcomes.
    • Algorithm Testing: eCOGRA assesses the algorithm’s resistance to common attacks and exploits that might attempt to predict or influence the RNG’s output. This involves looking for vulnerabilities that could compromise the randomness of the generated numbers.
    • Periodic Testing: RNG assessment is an ongoing process. Test labs may conduct periodic audits to ensure that the RNG’s performance remains consistent over time and that no alterations have been made to the algorithm.
    • Hardware and Software Environment: Evaluating the hardware and software environment in which the RNG operates, ensuring that the RNG’s performance is not affected by external factors or system conditions.
    • Certification Report: After completing the assessment, the test lab provides a detailed certification report to the gambling platform. This report outlines the findings of the assessment, including any vulnerabilities, deviations from expected behaviour, and recommendations for improvements.
    • Regulatory Compliance: Depending on the jurisdiction, online gambling platforms may be subject to specific regulatory requirements regarding RNG testing. Test labs ensure that the RNG assessment process complies with these regulations.
    • Continuous Monitoring: Even after certification, test labs may continue to monitor the platform’s RNG to ensure ongoing compliance and fairness. They may also conduct spot checks or re-certifications at regular intervals.
  • Benefits

    RNG assessments serve as a cornerstone in fostering player confidence and upholding the integrity of online gambling platforms. The primary objectives include ensuring fairness, where rigorous testing assures players of the fairness of the games, encouraging trust in the online gambling experience. Additionally, by guaranteeing that RNGs are genuinely random and unbiased, assessments contribute to maintaining the reputation of online gambling platforms.

    The process of RNG testing goes beyond technicalities; it directly impacts player confidence. Providing transparency and assurance through testing builds player confidence in the legitimacy of game outcomes, creating an environment where players can engage with a sense of trust.

    Furthermore, RNG assessments play a crucial role in preventing biases. Identifying and rectifying biases or flaws in RNGs ensures a level playing field, enhancing the overall gaming environment and contributing to a more enjoyable experience for players.

    The trust in randomness is fundamental to the appeal of online gambling. RNG assessments reinforce the randomness essential for fair play, creating a trustworthy and enjoyable gaming atmosphere where players can engage with confidence.

    In selecting a certification body, the expertise and credibility of the chosen partner plays a vital role. RNGs should be random, and the certification process must be entrusted to seasoned experts. For a reliable certification journey, consult with the experts in RNG testing.

Discover the benefits of compliance for your company, our team of experts have certified thousands of online gambling games, within multiple jurisdictions

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We Offer RNG Testing and Certification Services Within:


  • Alderney
  • Belarus
  • Brazil
  • Bulgaria
  • Buenos Aires City
  • Colombia
  • Connecticut
  • Croatia
  • Cyprus
  • Czech Republic
  • Denmark
  • Estonia
  • Georgia
  • Gibraltar
  • Great Britain
  • Greece
  • Isle of Man
  • Jersey
  • Latvia
  • Lithuania
  • Malta
  • Mendoza, Argentina
  • Michigan
  • Netherlands
  • Ontario
  • Pennsylvania
  • Philippines: First Cagayan
  • Philippines: PAGCOR
  • Portugal
  • Republic of Srpska
  • Romania
  • Spain
  • Sweden
  • Virginia
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