GLI-33

Event Wagering Systemsissuer Gaming Laboratories International (GLI)version v1.1verified 2026-08

GLI-33 is the Gaming Laboratories International standard for event (sports) wagering systems, created in response to demand from US state regulators, tribal nations and operators for a cohesive technical rulebook after the expansion of legal sports betting. It covers the wagering platform end-to-end: bet acceptance and settlement, account management, geolocation, responsible gaming, and system security. The standard is designed to work alongside GLI-19 (online casino systems) rather than duplicate it.

Current version

Gaming technical standard

v1.1

What it covers

Event/sports wager acceptance, house rules and settlementWagering account management and player verificationGeolocation and location-compliance controlsResponsible gaming and self-exclusion featuresAML, privacy and banking/payment considerationsSystem security, data integrity and audit loggingBetting kiosks and retail sportsbook equipment

Applies to

Sports betting and other event-wagering systemsOnline / mobile sportsbook platformsRetail sportsbook and self-service betting kiosksWagering account and risk-management systems

Key facts

IssuerGaming Laboratories International (GLI)

CategoryGaming technical standard

Where it’s usedAdopted or referenced by numerous US sports-betting states and tribal regulators (e.g. West Virginia Lottery, Choctaw and Cherokee gaming commissions) and others; exact applicability varies by jurisdiction (verify per market).

First published2018 (v1.0)

Current versionv1.1Released May 2019

IssuerGaming Laboratories International (GLI)

FocusSports / event wagering systemsOnline casino systems are covered by GLI-19

Related standards

GLI-19 GLI-11

Sources

GLI-33 Standards for Event Wagering Systems v1.1 (standard PDF)gaminglabs.com

Yogonet: GLI releases 'GLI-33 Event Wagering' technical standardyogonet.com

Public Gaming: GLI-33 Standards for Event Wagering Systems V1.1 releasepublicgaming.com

A standard is a ruleset, not a promise. A certificate against GLI-33 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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