GLI-19

Interactive Gaming Systemsissuer Gaming Laboratories International (GLI)version v3.0verified 2026-08

GLI-19 is the Gaming Laboratories International standard that defines the technical and operational requirements for interactive (online) gaming systems, from the random number generator through to player accounts and financial transactions. It is one of the most widely referenced rulebooks for certifying real-money online casino platforms. The current v3.0 edition separates lab-evaluated technical requirements from on-site operational controls and aligns GLI-19 with sister standards such as GLI-11 (land-based devices) and GLI-33 (event wagering). It explicitly excludes sports/event wagering, which is covered by GLI-33.

Current version

Gaming technical standard

v3.0

What it covers

RNG requirements (source-code review, statistical and independence testing)Game fairness and outcome determination (no adaptive behaviour or near-miss substitution)Return to Player (RTP) / payout percentage calculation and displayGame recall of recent completed game cycles (wager, result, jackpot)Player account management, authentication and re-authenticationFinancial transactions, wager deduction and logging of significant eventsResponsible-gambling controls (self-set limits, exclusion, delayed limit increases)

Applies to

Online / interactive gaming systemsRemote Gaming Systems (RGS) and game serversOnline casino games (slots, table games, etc.)Player account and wallet platforms

Key facts

IssuerGaming Laboratories International (GLI)

CategoryGaming technical standard

Where it’s usedReferenced or adopted by US iGaming states (e.g. New Jersey, Pennsylvania, Michigan) and various international and tribal regulators; exact applicability varies by jurisdiction (verify per market).

Current versionv3.0Revised standard released July 2020

IssuerGaming Laboratories International (GLI)

CostFree to downloadPublished on gaminglabs.com

StructureSystem/platform requirements, RNG requirements, game requirements, plus operational audit appendices

Related standards

GLI-11 GLI-33

Sources

GLI press release: GLI-19 Standards for Interactive Gaming Systems V3.0gaminglabs.com

GLI-19 Interactive Gaming Systems v3.0 (standard PDF)gaminglabs.com

GLI Standards indexgaminglabs.com

A standard is a ruleset, not a promise. A certificate against GLI-19 attests that a game or system met it at test time — it does not change the house edge or guarantee a session outcome. This is a teaching summary; confirm against the issuer (Gaming Laboratories International (GLI)).

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