GLI Laboratory

Gaming Laboratories International is a globally recognised leader among independent entities that specialize in the testing and auditing of gaming systems. Established in 1989, the organization has since become a benchmark within the industry, trusted by thousands of operators and regulators worldwide. Today, GLI operates in more than 475 jurisdictions across 130 countries, employing over 850 specialists across 21 offices on six continents.

Certification and auditing by Gaming Laboratories International are a critical prerequisite for launching and operating gaming businesses in most developed markets. Casino operators, bookmakers, payment service providers, and even national lotteries routinely rely on GLI to evaluate gaming platforms, hardware, and in some cases entire infrastructures.

Every year, the laboratory conducts more than 1.4 million tests, issues over 75,000 unique certifications, and plays an active role in the development and implementation of new industry standards. By 2025, GLI’s database of certified equipment exceeded 2.5 million gaming devices, while the total number of projects tested throughout the organization’s history surpassed 120,000. As global online markets continue to expand, GLI consistently evaluates next generation solutions, including interactive gaming machines, mobile platforms, VR casinos, and tote board systems.

Certification and Audit: Stages, Standards, Innovations

GLI develops its own unique standards that are recognized worldwide:

• GLI-11 for land based casinos,
• GLI-19 for online platforms and interactive systems,
• GLI-33 for online betting and tote boards.

Certification begins with an in depth analysis of the source code, hardware solutions, random number generation (RNG) algorithms, and a thorough review of technical vulnerabilities and system errors. This is followed by mathematical and stress testing, evaluation of RTP settings (return to player), verification of compliance with international Fair Play principles, and a comprehensive audit of player protection mechanisms.

In addition, GLI assesses compliance with the legal requirements of specific jurisdictions, including:

• Financial transparency,
• Personal data protection (GDPR),
• Accuracy of information protocols,
• Security of financial transactions.

GLI actively implements innovative technologies, including mobile based testing, automated submission and verification of documentation, and the integration of AI and blockchain for deeper analysis of gaming processes. In 2025, the company announced updated digital platforms, GLIMobile and GLIAccess. As a result, more than 10,000 operators can now track audit and certification status in real time.

ISO Accreditation and International Recognition

GLI became the first laboratory in the industry to voluntarily become accredited under key international ISO standards:

• 17025 (laboratory testing)
• 17020 (inspections)
• 17065 (product certification)
• 17021-1 (information security)

GLI certification is recognized in the United States, the EU, Australia, South America, Asia, and Africa, and its reports are accepted as a benchmark within the industry by government authorities, major banks, and international investors. More than 130 official regulators specifically require GLI certificates for the registration of platforms and equipment, while leading operators regard the GLI mark as a mandatory requirement for operating in competitive markets.

Player Protection and Fairness Standards

GLI places particular emphasis on transparency and social responsibility, with its standards covering the following requirements:

• The randomness of RNG operation
• Verification of RTP payout statistics
• Implementation of self limitation tools
• Mandatory age verification for all users

Under the GLI-19 standard, every online platform is required to:

• Display clear and detailed rules for players
• Implement mechanisms that block operations in cases of suspicious activity
• Maintain a dedicated player support hotline
• Apply a transparent refund and withdrawal policy

GLI cooperates with dozens of government bodies and industry associations such as IAGR and EEGS, acts as a technical expert at international conferences, and develops free methodological guidelines for emerging markets. Over the past three years, GLI’s training modules have been downloaded by more than 50,000 operators, many of whom have implemented these methodologies within their responsible gaming support systems. The organization also actively develops its own educational institution, GLI University™, where technical inspectors from 15 national regulators receive professional training.

Market Share, Influence, Partnerships

More than 85% of the industry’s top brands and 23 of the 25 largest casino operators rely on GLI certification to enter new markets, integrate payment services, modernize infrastructure, and work with major banks. The company tests over 300,000 gaming devices each year, helping operators reduce audit costs and accelerate licensing timelines. In 2024 alone, more than 10,000 operators adopted GLI’s new mobile platforms, while audit reports became accessible to over 100 additional governments and international consortiums.

GLI employs some of the industry’s largest teams in cybersecurity, IT, and legal compliance auditing. Its organizational structure also includes a dedicated forensics division — a specialized team focused on investigating technical incidents, fraud, and anomalies in gaming system behaviour.

Conclusion

GLI is a universal standard of independent auditing, technical reliability, and social responsibility for the entire gambling industry. Certification and auditing by Gaming Laboratories International have become essential for launching a casino, bookmaker, payment system, or gaming software in today’s global market. Transparent procedures, cutting edge technologies, international recognition, and a strong commitment to player protection make GLI a trusted guarantor of quality for regulators, operators, and players worldwide.