While traditional slots have a single horizontal payline in the middle, others have multiple paylines. Three-reel slots have one to nine paylines. However, each machine allows a maximum bet of three coins. The maximum bet on a machine with multiple paylines is equal to the number of lines.
A Multiplier is a machine that accepts multiple coins and pays out based on the number of coins played.
Bally introduced the first such machine in 1987, allowing casinos to entice players to wager more. If a player bets one coin and gets three sevens, they win £5. To win £10, a player must bet two coins. Except for the most lucrative multipliers, which pay out proportionally on all winning combinations except when played with the maximum bet.
Most slot machines in a casino are multipliers, and while they still allow single coin play, most players prefer to bet the maximum.
Five-reel slots allow between 20 and 25 multiple combinations, with some allowing up to 200. The more paylines selected, the higher the bet and the more chances to win per spin. Also, they can quickly deplete their bankroll by placing multiple bets and spinning the wheel repeatedly, appearing to win more money.
A slot machine typically has only one payline in the centre of the screen, where the winning symbols must line up to be a winner. However, manufacturers introduced machines with multiple paylines to give players more action. To activate an extra payline, typically one more credit is required, and an indicator lights up when a coin is inserted into the machine.
Playing more than one payline does not increase a player’s chances of winning, but it does not hurt them either. For each machine, the manufacturer sets the payout ratio to meet the casino’s requirements.