The payout structure is set by the casino, & different combinations result in different payout amounts. Modern video slots, on the other hand, use Random Number Generators (RNGs) tobest slots casinos decide the results. Generating random numbers and contemporary video slots. Thousands of random numbers are produced every second by a sophisticated algorithm known as an RNG, which guarantees that every spin is distinct and unpredictable. Upon pressing the spin button, the RNG chooses a number that matches a particular set of symbols displayed on the screen.