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A progressive jackpot is a jackpot (a gambling grand prize or payout) which increases each time the game is played but the jackpot is not won. When the progressive jackpot is won, the jackpot for the next play is reset to a predetermined value, and resumes increasing under the same rule.

Many slot machines and video poker machines feature a progressive jackpot. The jackpot increases by a small predetermined amount each time the game is played. Often multiple machines are pooled or linked together to form a larger progressive jackpot which grows more quickly because more non-winning plays can be counted toward it.

Many lotteries feature progressive jackpots. After each drawing in which the jackpot is not won, a large amount of money is "carried forward" to the jackpot for next drawing.

## Game Shows

Most notable use is the U.S. version of Who Wants to Be a Millionaire. In 2001, the producers of the show, said it has been too long since a contestant in 2000 won the million, so they instituted a bonus where \$10,000 is added to the million dollar prize per show. It started at \$1,710,000 and it went all the way to \$2,180,000. the host was Regis Philbin.

## Progressive jackpot meter

The amount of the jackpot increases by a small amount for every play on any connected machine. The amount by which the jackpot advances is set by the casino ("the house"). A machine offering a progressive jackpot usually displays the amount of the jackpot, rather boldly, to attract players. After a player wins the jackpot, the jackpot resets to a preset minimum level.

For example, on a machine whose house edge is 5%, a generous jackpot contribution might be 1% (one fifth of the expected profit). The house is prepared to contribute some of the profit of a jackpot linked machine because players are attracted by the:

• relative novelty of progressive jackpots (generally, only a small fraction of the house's gaming machines will be connected to a progressive jackpot)
• constantly changing meter, often displayed on large LCD or LED displays
• large amount of the jackpot, which eventually motivates more players to play the game.

## Qualifying

Usually the progressive jackpot is only offered to players who wager the maximum number of credits per play. All wagers, whether or not they are maximum-credit bets, contribute to the jackpot. As a result, a game which requires a 10-credit wager to qualify for the progressive jackpot tends to have its progressive jackpot rise to higher levels (relative to its break-even level) than a game that requires only a 5-credit wager to qualify.

Usually the jackpot can only be won by winning the combination with the highest payoff, e.g. a royal flush at a video poker game, or five of the most valuable symbols (lemons, cherries, alligators, etc.) on a slot machine.

## Break-even point

In some games such as video poker, blackjack, or Caribbean stud poker, it is possible to compute an optimal playing strategy based on the average payoff (the amount of payoff times the chance of payoff). Because the jackpot of a progressive game constantly grows, it sometimes exceeds the break-even point for players, such that the jackpot wager becomes a "positive expectation bet" for the player, with an average return to player (RTP) of greater than 100%. When the progressive jackpot is less than the break-even point, there is a negative expected value (house edge) for all players.

In the long run, with optimal strategy, a player can profit by only playing progressive games when their jackpots are above the break-even point, although the "long run" can be quite long, tens of thousands of plays.

The break-even point cannot be easily calculated on a slot machine game, because the payback percentage for the game is normally unknown to the player. The break-even point in poker-based games can be calculated because the payback percentage for the game is a function of the paybacks and odds of the poker hands, which is based on a standard 52-card deck. The return of a slot machine is based on the published paytable, but also on the normally unpublished reels. For a five-reel slot machine, the player would need to know each symbol on each of the slot machine's five reels in order to calculate the odds. For a three-reel slot, the reels are normally weighted, and this would not be possible. However, in some circumstances the manufacturer may publish the payout of their machines.

Many online casinos allow the same game to be played in multiple currencies, in which case the break-even point and average return to player can change depending on the player's currency choice. This is because the jackpot amount may be converted between currencies so that the same amount is paid out to the winner no matter their currency choice, but the wager required to qualify for the jackpot is not. For example, consider a game that pays a \$1000 / €900 / £700 jackpot, but requires a fixed \$1 / €1 / £1 wager to qualify for the jackpot. In such cases, it is beneficial for the player to play in dollars, as the qualifying wager is a smaller proportion of the jackpot. Thus the break-even point will always be lower and the return to player will always be higher while betting dollars.[1]

Advantage players, who only play when the progressive jackpot provides them with a positive expectation situation, still generate revenue for the casino. Even though the player has an advantage over the house, the casino still profits from each play, because the bulk of the progressive jackpot has been pre-paid by the prior non-winning players.

Advantage gamblers sometimes organize teams of players to play machines where the progressive jackpots generate a positive expectation situation. Such teams often displace ordinary players, making the machines unavailable just when they are the most attractive to gamblers generally. Team members often have cell phones and work in shifts, calling a teammate to replace them when they're ready for a break. Some casinos have a policy of "no team play", and will eject players suspected of playing on such teams. Such tactics do not work at online casinos because there are effectively an unlimited number of duplicate machines for players to play at, so the game cannot be monopolised by one player or small group.

## Player's clubs

Most casinos offer slot clubs, which pay back a percentage of a gambler's wagers on their games in the form of cash rebates or other perks with a monetary value. Participating in a slot club can reduce the break-even point of a progressive jackpot game because of the value of the rebate on each wager.

## Other jackpot games

Progressive jackpots are not limited to slot machines and video poker. Poker games sometimes include a progressive bad beat jackpot. Caribbean stud poker is another casino game which often has a progressive jackpot available, and some online casinos offer progressive versions of blackjack, roulette, and other casino games. Many lotteries feature progressive jackpots.

## Progressive blackjack

A progressive blackjack game usually does not differ from conventional blackjack, apart from the addition of an optional side bet which gives the player a chance to win a progressive jackpot. The side bet wins if the player is dealt one of several specific card combinations such as four suited aces. The awards can range from several dollars up to 100% of the jackpot depending on the different card combinations, and the winning hand paytable can differ between casinos.[2]