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RNG (Random Number Generator)

Published: August 1, 2026Updated: July 7, 2026

Brief Definition

An RNG (Random Number Generator) is a software algorithm or hardware device that generates unpredictable, random outcomes for online casino games, ensuring fairness and integrity.

Detailed Explanation

What it is:

An RNG is the core technology that determines the outcome of each game round in online casino games. It produces sequences of numbers that cannot be reasonably predicted better than by random chance. In regulated markets, RNGs must be certified by independent testing laboratories.

How it works:

  1. Algorithm Execution: The RNG continuously generates random numbers, even when no game is being played.
  2. Outcome Determination: When a player initiates a game action (e.g., spins a slot), the current RNG value determines the result.
  3. Mapping to Game Elements: Random numbers are mapped to game outcomes (symbols on reels, card deals, etc.).
  4. Certification: Independent labs test the RNG to ensure it meets statistical randomness standards.
  5. Audit Trail: All RNG outputs are logged for regulatory auditing purposes.

Why it matters:

RNG is fundamental to player trust and regulatory compliance. Without certified RNG, games cannot be considered fair, and operators cannot obtain licenses in regulated markets.

Who uses it:

  • Game Providers: Implement RNG in their games.
  • Operators: Must ensure all games use certified RNG.
  • Regulators: Require RNG certification for licensing.
  • Testing Labs: Certify RNG systems for compliance.

Context of use:

Used when discussing game fairness, regulatory compliance, or technical specifications. Example: *"All our games use RNG certified by GLI and eCOGRA."*