Lately in online casinos you will see the options to play progressive online slots free, a new fantastic way to play slots games. What is a progressive slots machine? It is a slots machine linked to multiple slots machines, a chain of slots games on which each bet makes the jackpot to grow. You will see the jackpot displayed on your monitor and you will see its evolution during your bets on other players bets. There are some rules to win a jackpot so it is wise to read it before you play a progressive slots game, so you can raise your chances to be the lucky winner. The rest of the play is exactly as normal playing slots but the number of bets each player does on slots machines multiplies the perspective, the jackpot.