What is a random number generator (RNG)?
A random number generator (RNG) is a computer program that runs inside of a slot machine. When a wager is made and the reels are spun, the random number generator selects random numbers that the slot machine computer then uses to calculate where the reels will stop. All slot machines in the Detroit casinos are required to use a random number generator to determine where the reels will stop. Slot machines random number generators are carefully reviewed and tested by the MGCB Gaming Laboratory and must meet strict mathematical randomness requirements.