Payline refers to the lines based on which you will get paid out for winning combinations. In other words, the more paylines the slot features, you have a chance to win from a greater number of combinations. When you play online slots, the grid on which you get the combination of matching symbols is known as payline. In plain words, you win due to paylines.
There are slots where you get to select the number of paylines you want to play with. It is called the bet line in this case as altering the bet lines, you can either increase your bet or decrease it.
The first slot machine invented had only one payline but now you can stumble upon slots with 10, 25 and even over 1000 lines to bet. Paylines in modern slots are not really horizontal but they can be vertical, zigzag or diagonal. Players are needed to select the size of coins they wish to wager on each active line to choose the ones they wish to activate.
As you increase your bets on the number of paylines, your chances of winning improve and you can also hit a combination of several lines in one spin which will help in getting paid better. Players need to check the available paylines along with the payouts and the way they appear on the reels by opening the online slots payable to get this information. You will also get the information about the lowest and the highest paying symbols in the games.
You may choose to deactivate a few lines and if you land a winning combination on that payline then you will not win the payout.