Play the single pay line
These machines usually have larger payouts than the multi pay line machines, even though the multi pay lines have higher odds.

Play the maximum bet
It's smart to bet the maximum number of coins per spin. This is because in order to hit the jackpot on progressive slot machines, you must place a maximum bet. So if you match up all the right symbols, you'll win a smaller amount if you bet less.

Double jackpots
These symbols are very lucky. They can help you win double or even triple the payout. These can replace any symbol. They're red, white and blue sevens or even double and triple diamonds.

Stop while you're ahead
Set a limit for yourself and to stop playing once you hit it. Just because you put money into a machine doesn't mean you'll win or that you'll be guaranteed a large payout. When you win, stop while you're ahead. The more times you try to win back your money, you'll probably end up losing all of your earnings and spending more money.

Other slot machine tips and advice It's also important to check the value of the symbols on every slot machine. They can be worth different amounts from machine to machine. Also check the payback percentage, the return you'll get on your bet. Most gambling establishments have machines with payback percentages set at over 75 per cent.