Progressive slots are the big boys of the slot world. These are the slot machines that can allow a player to leave their jobs and move to the beach after they've hit the jackpot. They don't hit often, but they make up for it by hitting big; we're talking really big. Like Schoolhouse Rock used to say, "Knowledge is Power," and the more you know about progressive slots, the more likely you are to have a pleasurable experience playing one of the machines.
Progressive slots are a group of machines that are connected together on a network. The jackpot is a percentage of the money played in all of the machines. That is the reason that the jackpot can be so high. On the downside to this, since the jackpot is made up of money being played into the machines, it often means that the payout for progressive slots is slightly less than normal.
Unlike normal slots, when you play a progressive you should play the max amount of coins. The money you put into a progressive contributes to the jackpot no matter what, but usually the only players that are eligible to win the big money are the ones that play the maximum amount of coins in the machines. No one wants to be playing a progressive and not win that big jackpot simply because they didn't want to put in an extra coin. Progressive slots are a fun time, and should be played but only sparingly. Try for the luck, but don't stay too long.