All the experts say that, if you are going to play a multi-line slot machine, you should play all the lines on the slot machine. You can play just one coin for each of the lines, but you should, at a minimum, play all the lines. It can run to a lot of money, especially if there are 25 lines, but you want to maximize your chances to win on a multi-line machine. Of course, you should never play more than you can afford. If you can't afford 25 lines, then you should play machines that don't have that many lines. But, always play all the lines on a multi-line machine.

Ricky