Basically, a progressive jackpot is the jackpot for a gaming machine, where the value of the jackpot increases every time a game is played. In online casinos, a set of gaming machines is linked to one big progressive jackpot.

The amount of the progressive jackpots are shown on the sites of online casinos and are being updated constantly, since the amounts increase rapidly. The way to win the progressive jackpot is the same as any other jackpot, by having the best hand or all the symbols right at the slots machines. Usually, only players playing maximum credits per play will qualify for winning the jackpot.

When the progressive jackpot is hit, the jackpot resets. In most online casinos the progressive Jackpots never get reset to zero, but have a minimum level of a couple of thousand dollars to keep it interesting for people to play them.