Both land casinos and online gambling web sites offer to participate in the progressive Jackpot adventure. Jackpot is cash which can be taken by the luckies gambler, i.e. that gambler who is dealt the rarest or previously agreed combination. Progressive Jackpot is a Jackpot the sum of which is growing thanks to the deposits of gamblers until the moment when one lucky player takes it all. As a matter of fact, the progressive Jackpot casinos are the largest and well-known casinos which work on a single software. For instance, Micro gaming software is the base for more than 100 casinos. It means that Casino 1, Casino 2 and Casino 3 being located in different countries accept deposits from thousands and even millions gamblers (on average, 85% of each bet are included into progressive Jackpot). In such a way, the progressive Jackpot casinos used to involve new gamblers promising progressive Jackpot. Most of them are honest. They really offer progressive Jackpot, but it often happens than among 200 offered gambling games there are only 20 of them with progressive Jackpot.

It concerns all gambling games, even bingo. Online bingo sites are springing up all over (online bingo reviewis a proof of that). They are offering a lot of progressive bingo Jackpot games (MegaBall, Fun Jackpot, and many others). In order to take part in the progressive bingo Jackpot game a gambler is required to deposit a large sum of money or to contribute some sum in order to be approved to participate. Jackpot may be cancelled. In this case, also, if the Jackpot has been won, all gamblers receive a notification letter. Since then, an accumulation of the progressive Jackpot begins again.