A special engine that controls how many symbols appear on each reel with each spin is at the core of Megaways slots. This engine uses a random number generator (RNG) to ensure thbest slots on bovadaat the results are completely fair and unpredictable. The number of symbols that can appear on each reel can vary, so the total number of ways to win can fluctuate significantly from spin to spin. Winning Combination Calculation. One way to determine the total number of winning combinations is to multiply the number of symbols on each reel collectively.