Clearing up "slot machine megaways" starts inside the cabinet. A slot machine looks like a game of reels, but what decides every payout is a random number generator working out of sight. The reels, the paylines and the buttons on the screen only show a result that was fixed the moment the spin began. Knowing how that works, from mechanical machines to modern video slots with megaways and bonus rounds, clears up most of what players ask about them.
A few questions come up about what happens behind the scenes. When a slot machine is reset after a jackpot or a fault, nothing about its odds changes; the generator keeps running. When a machine malfunctions, the rule printed on most games voids pays and plays, and the logged result settles any dispute. Slot machines cannot be adjusted on the floor without approval and new software. Hacked machines are a rare crime, not a player strategy, and old slot machines are usually scrapped or sold on to collectors.
Slot machines determine a payout in two steps. A random number generator picks a result the instant the spin button is pressed, and the pay table converts that result into a win or a loss. Slots are actually random in this sense: no spin remembers the last, and a machine is never due. What the operator sets is the return to player, the share of stakes paid back over millions of spins, which is fixed in the game's code.
Paylines on a slot machine are the patterns across the reels that count as a win, from a single middle line on classic games to hundreds on modern ones. Megaways games change the number of symbols on each reel every spin, giving tens of thousands of ways to win. The buttons set the stake and the number of lines. Which type of slot machine is best depends on what a player wants: steady small wins, or rare large ones.
A coin passed sensors that checked its size and weight, a lever or button released physical reels, and the stops on each reel decided the symbols.
Autoplay runs a chosen number of spins automatically, and limits set on total losses or on a single large win halt it before the count runs out.
Free spins, pick features and wheels are games inside the game, funded from the same return to player as ordinary spins rather than from anything extra.
A random number generator picks the outcome the instant the spin button is pressed; the reels only display a result that is already fixed.