RNG: The Key to Randomness in Online Casinos
What is an RNG?
RNG stands for Random Number Generator. It is an algorithm designed to produce unpredictable sequences that lack patterns. In casino games, these algorithms are essential for ensuring completely random and fair outcomes.
Games that use RNG
Card Games
Random number generators ensure the fair distribution of cards in all digital card games.
Slot Machines
Each spin is determined by an RNG. By pressing the spin button, the algorithm assigns a combination of symbols independently from the previous spin.
Roulette
In online roulette, the RNG decides the number and color where the ball lands, replacing the physical spin of the traditional wheel.
Exceptions
Live dealer games (live cards, live bingo, etc.) do not employ RNG; randomness comes from the physical actions of the dealer.
Difference between RNG and RTP
Feature | RNG | RTP |
|---|---|---|
Function | Guarantees randomness and fairness of each individual outcome. | Indicates the theoretical percentage that a game returns to players over time. |
Timeliness | Acts in each moment of gameplay. | Calculated after millions of plays. |
Influence | Affects the immediate unpredictability of results. | Adjusts long-term return expectations. |
Example of RTP
An RTP of 96% implies that the game will return €96 for every €100 wagered over time, although individual results may vary.
Acceptable RTP Ranges
No casino offers an RTP higher than 100%, as this would mean guaranteed losses. However, there are games with RTPs very close to 100%, minimizing the player's potential loss in the long term.
Importance of Regulated Environments
Certification laboratories thoroughly verify RNG and RTP percentages. Playing in regulated casinos ensures that:
Transparency and fairness tests have been passed.
Algorithms maintain randomness and are free from biases.
Player protection regulations are met.
Assessments by GLI and BMM Testlabs
Audits include source code analysis, verification of the RNG range and period, and checking the randomness of initialization events.
Recommended Technical Requirements for an RNG (BMM Testlabs)
Thread safety: prevent failures from simultaneous calls.
Single instance: use a single RNG for all results.
Scalability without bias: maintain impartiality when increasing load.
Background updating: allow improvements without interrupting the service.
Truly random event for seeding: start with an unpredictable source.
Conclusion
The combination of RNG and RTP supports fairness, transparency, and security in online casinos. Independent certifications and compliance with technical requirements guarantee a reliable gaming experience for users.
