Katrina Griffiths
Senior editor
Published on: 02.06.2026
How RNG Certification Works and Why It Matters for Fairness
When an online casino describes its games as fair, that claim is only meaningful if the random number generator (RNG) — the software engine behind every card draw, reel spin, and dice roll — has been independently certified. Certification by an accredited testing laboratory confirms two things: that outcomes are statistically unpredictable, and that the published return-to-player percentages match what the software actually produces. The AGLC requires this certification as a condition of licensure in Alberta, making it a legal requirement rather than an operator choice.
What an RNG actually does
An RNG uses a computational algorithm to produce sequences of numbers at an extremely high speed. Each number maps to a specific game outcome such as a card value, a reel position, a dice result. This is called pseudorandom number generation: the outputs are statistically uniform and non-repeating, which is what matters for game fairness, but they are generated by a deterministic algorithm rather than a truly random physical process.
The practical concern: a biased or predictable RNG can be exploited or can produce outcomes that favour the house beyond its stated odds. Certification exists to rule out both. Without it, there is no external verification that the RNG produces outcomes consistent with what the game advertises.
Who certifies RNGs and what qualifies them
Four testing laboratories are widely recognized as accredited RNG certifiers:
These organizations are independently audited by regulators themselves — their qualification is not self-declared.
The AGLC requires that RNG certification come from a recognized laboratory, and operators must disclose which lab certified their games. The certifying lab has no commercial relationship with the outcome of its own tests. It does not benefit from certifying a game as fair when it is not.
If a casino cannot name the lab that certified its RNG, that certification has not been confirmed.
What the testing covers
Accredited lab testing covers four specific areas:
- Statistical distribution: across millions of simulated rounds, does each possible outcome occur with the expected frequency? A biased generator would produce an uneven distribution that deviates from theoretical probability.
- Seed independence: can any outcome be predicted from knowledge of the seed used to initialize the algorithm? A properly functioning RNG must produce unpredictable results even if the seed is known.
- Output unpredictability: can any output be reverse-engineered from prior outputs? This tests whether a sequence of past results could be used to anticipate future ones.
- Game math verification: do the game’s published return-to-player figures match the outcomes the RNG produces across the tested sample? A game that advertises 96% RTP must produce results consistent with that figure, not a figure that benefits the operator.
What AGLC requires
Certification is not a one-time exercise. Operators are required to maintain current certification to retain their AGLC license. If an operator updates its gaming software, including minor revisions to an existing game, the RNG must be re-tested before the updated version is offered to players.
Players are entitled to ask which laboratory certified a specific game. If you are playing at an AGLC-licensed casino and cannot obtain that answer, it is worth raising directly with the AGLC.
What RNG certification doesn’t guarantee
Certification confirms statistical fairness, but it doesn’t predict the likelihood of winning. Return-to-player (RTP) is a long-run average calculated across millions of rounds. Individual sessions, even long ones, can vary significantly from the published figure in either direction. That is expected and consistent with a certified RNG.
RNG also doesn’t cover terms, wagering requirements, jackpot structures, or other game design decisions. The testing lab verifies that the RNG behaves as specified, but it doesn’t evaluate whether the game design is favourable to players, or whether promotional terms are reasonable.
The live dealer exception
RNG certification applies to software-driven games only, including slots, virtual table games, digital card draws, and video poker. It does not apply to live dealer games.
Live dealer games such as blackjack, roulette, and baccarat streamed from a studio or casino floor derive their randomness from physical processes: real cards, an actual roulette wheel, physical dice. Because no algorithm is involved, there is no RNG to certify.
Fairness in live dealer games is verified through equipment inspections, studio audits, and dealer conduct oversight which is outside the scope of RNG testing. If you’re playing at a live dealer table and looking for an RNG certification badge, you won’t find one. That’s expected, not a red flag.
How to confirm a casino’s games are certified
Look for the certifying lab’s badge in the game information panel, from within most games, or in the casino footer. AGLC-licenced operators are required to disclose their RNG certification.
If no lab is named and the casino does not appear on the AGLC’s list of licensed operators, no independent test has been confirmed. Playing at an unlicensed casino means playing with no external verification that the RNG produces fair outcomes.
Conclusion
RNG certification is what converts ‘fair’ from a marketing phrase into a verifiable claim. Without independent testing by an accredited lab, there is no external check on whether a casino’s games behave as advertised. At an AGLC-licensed casino, that check is a legal requirement. The certifying laboratory must be named, the certification must be current, and players have the right to ask for it.
