GLI certification is the process by which Gaming Laboratories International (GLI) — one of the world’s leading independent testing laboratories — validates that iGaming games and platforms meet the technical and integrity standards required by regulators in licensed markets.
For an operator or game studio, receiving a GLI certificate means a third party has confirmed your product performs as intended, with no manipulation risk and no mathematical errors in the documented payout model.
Understanding what GLI certification involves allows your team to build a development roadmap that accounts for audit requirements from the earliest design stages. Working with professional partners who offer gaming certification and compliance services helps navigate these technical audits efficiently, turning compliance into a strategic asset for international expansion.
Why GLI became the global benchmark for iGaming compliance
Gaming Laboratories International is recognized worldwide as a leading independent laboratory for the testing and certification of gaming systems. A GLI certificate confirms that a product has undergone exhaustive third-party validation by experts with no affiliation to the development team — exactly the kind of independence regulators require before granting a market license.
In tier-1 jurisdictions, a license is rarely granted without a report from an accredited lab. GLI’s technical report provides the state with objective proof that the game meets integrity standards and resists manipulation. Beyond legal mandates, it protects the operator’s financial position by ensuring payout structures and mathematical models function correctly, preventing costly errors or exploitation.
Many licensing frameworks explicitly require GLI certification (or an equivalent accredited lab report) as a prerequisite for approval. Jurisdictions like those covered by a Kahnawake gaming license or a Malta gaming license have established technical audit requirements that GLI’s standards are specifically designed to satisfy. Understanding which standard applies to your product avoids costly late-stage surprises.
Key technical standards: GLI-11 vs. GLI-19
For Product Managers and CTOs, distinguishing between game-level and platform-level standards is essential — they involve different audit scopes, different deliverables, and different timelines.
GLI-11 specifically targets the mechanics of the game itself. This standard evaluates the Random Number Generator (RNG), the game’s mathematical model, and the visual feedback provided to the player to confirm outcomes are genuinely random and advertised odds are accurate.
GLI-19, or Interactive Gaming Systems, shifts the focus to the entire platform infrastructure: the security of the Player Account Management (PAM) system, the integrity of financial transactions, and the protection of sensitive user data.
A game may be mathematically sound and still be ineligible for deployment if the platform delivering it lacks the security protocols required under GLI-19. Both layers must be compliant for a full market launch.
What do auditors actually evaluate during the process?
The auditing process involves a systematic review of the software’s core technical pillars. The primary focus is RNG integrity: auditors run extensive simulations to confirm that output sequences are statistically unpredictable and free of detectable patterns. This safeguards the house margin and the operator’s reputation against sophisticated exploitation.
Auditors also verify Return to Player (RTP) percentages against the technical specifications submitted by developers — a critical step for maintaining the mathematical balance of the game’s ecosystem. From there, the evaluation extends to information security: the encryption methods and access controls protecting player funds and private data from external breaches.
Additional areas include communication protocols — how the game client communicates with the backend platform and whether any vulnerabilities exist in data transmission. Auditors also assess disaster recovery: the system’s ability to restore game states and financial records after a sudden server failure or power loss. This ensures the platform holds up under real-world operating pressure, not just ideal conditions.
- Information Security: Reviewing encryption methods and access controls to protect player funds and private identity details from external breaches.
- Communication Protocols: Testing how the game client communicates with the backend to ensure data transmission is free of exploitable vulnerabilities.
- Disaster Recovery: Evaluating the system’s ability to recover game states and financial records after sudden server failure or power loss.
These evaluations ensure the product is fair, stable, and secure under heavy traffic loads. By addressing these concerns before the official audit begins, teams avoid the significant financial and reputational damage associated with software exploits or platform downtime.
Operational benefits: Beyond simple compliance
GLI certification offers significant operational advantages beyond regulatory checkboxes. One of the most immediate benefits is faster time-to-market: because GLI standards are recognized by regulators in hundreds of jurisdictions, a certified product can often enter new markets with reduced additional testing requirements. Many regulators accept bridging audits that only test for local-specific deviations from the core GLI report.
Certification also acts as a catalyst for high-value B2B partnerships. Top-tier aggregators, payment providers, and marketing affiliates typically decline to work with platforms that lack reputable third-party validation. Securing this seal opens access to a broader ecosystem of premium content and financial services, building a foundation for higher player lifetime value through improved trust and retention.
How to prepare your product for a successful GLI audit?
Successful certification starts well before auditors receive the code. The first step is assembling comprehensive technical documentation: architecture diagrams, mathematical proofs of game logic, RNG descriptions, and a clear outline of all communication protocols between the game client and server. Incomplete documentation is one of the leading causes of audit delays, forcing labs to pause and request clarifications.
Internal pre-compliance testing is equally important. Identifying and resolving bugs or security vulnerabilities before the official audit reduces the risk of a failed cycle. Legacy systems deserve particular attention, as older code may not meet current encryption or protocol standards.
If you are new to the process, understanding how to get a gambling license in your target jurisdiction will clarify which specific GLI standards apply and in what order.
Treating certification as an iterative quality process rather than a one-time exam leads to faster approval cycles. The RNG audit, for example, becomes far smoother when developers understand from the start how developers implement RNG in slot games in a way that satisfies audit criteria.
Navigating the future of iGaming technical standards
As iGaming moves toward cloud-native architectures and real-time data processing, technical standards are evolving alongside the industry. The current direction trends toward continuous compliance models, where automated monitoring tools check platform integrity in real-time and complement traditional periodic audits. AI and machine learning show early potential for detecting anomalies in performance or security patterns faster than manual review cycles.
These are emerging tendencies, not established requirements — no jurisdiction currently mandates AI-based continuous compliance. That said, teams building for scalability benefit from designing with auditability in mind from the start, as stricter requirements in tier-1 markets appear likely over the coming years.
The cost of achieving GLI certification is better understood as a strategic investment than a sunk expense. Limited market access and exposure to regulatory fines consistently outweigh the time and resources a rigorous audit requires.
At Wizards, we support studios and operators through every stage of technical certification — from architecture review to final documentation — so your product reaches regulated markets on schedule. Contact our team to discuss your compliance roadmap.
FAQs about GLI compliance and technical standards
How does GLI certification affect an international expansion strategy?
GLI standards are recognized by regulators across hundreds of jurisdictions, but local requirements may still vary. Many regulators accept bridging audits that test only for local-specific deviations from the core GLI technical report, significantly reducing redundant testing costs. This makes a GLI certificate a practical foundation for multi-market expansion — one thorough audit that accelerates entry into several regulated territories rather than starting from scratch in each one.
Do minor software updates or platform patches require re-certification?
Any change affecting regulated components — such as the RNG, financial modules, or core security protocols — typically requires notification to the testing lab and may trigger a targeted re-audit. Minor cosmetic or UI updates generally do not. Establishing a clear change management process ensures that ongoing platform development does not inadvertently affect certification status, maintaining operational continuity and reducing friction with regulators during iterative releases.
Does an operator need to certify third-party games if the platform already holds a valid GLI-19 certificate?
Certification is required at both the infrastructure and the content levels. Even if a platform is certified under GLI-19, each individual game or third-party integration must meet GLI-11 standards independently. Most operators address this by partnering with studios that already hold GLI-11 certificates for their titles. If an operator develops proprietary games, those titles require their own independent mathematical and integrity audits before deployment on the certified platform.
What is GLI-19 certification and what does it cover specifically?
GLI-19 is the GLI standard for Interactive Gaming Systems — it covers the platform layer rather than individual games. The audit evaluates the Player Account Management (PAM) system, financial transaction integrity, data protection protocols, and system resilience under failure scenarios. A platform must hold a valid GLI-19 certificate before any certified games can be legally deployed on it in most regulated markets. Think of it as the foundation that makes the game-level GLI-11 certificates enforceable in practice.
What technical documentation should development teams prepare before the audit begins?
Auditors require a complete submission package: source code, mathematical proofs, RNG descriptions, system architecture diagrams, and a clear outline of all client-server communication protocols. Organizing this documentation before submission prevents stop-clock situations where the lab pauses the audit to request missing materials. Teams that prepare a thorough, well-structured technical package consistently experience faster and more predictable certification timelines than those who assemble documentation reactively.
Does GLI certification cover continuous or real-time compliance monitoring?
Not as a requirement today. The direction of travel is toward continuous compliance models, where automated monitoring tools check platform integrity in real time and complement the traditional periodic audit, and AI and machine learning show early potential for detecting anomalies in performance or security faster than a manual review cycle can. These are emerging tendencies rather than established requirements: no jurisdiction currently mandates AI-based continuous compliance. Teams building for scale still benefit from designing with auditability in mind, on the expectation that tier-1 markets tighten over the coming years.
