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. Often, the displayed amount of such jackpots includes a base payout which is often simply the regular payout for the winning combination multiplied by the minimum qualifying bet. If the jackpot is "reset" to this amount each time it is won then in essence the house is not providing any "seed money" for the jackpot since the minimum that can be won in such a case would simply be the amount the player would normally be awarded for the jackpot-winning combination. "Mystery" or "must-hit-by" jackpots A variation of the standard progressive jackpot is the "must-hit-by" jackpot, which has substantial differences compared to traditional jackpots. The value of every "must-hit-by" jackpot is determined immediately after the preceding jackpot is won by a random number generator and stored within an encrypted computer connected to a gaming machine (or, more commonly, a network of machines) and is publicly disclosed to be within a certain range (for example, a small jackpot might be programmed to pay out at between $1,000 and $3,000). The jackpot pays on the wager that causes the jackpot to reach or exceed the threshold, with the maximum value within this range being the "must-hit-by" amount. Often such jackpots encompass a variety of games, with each game contributing a small percentage of wagers to the jackpot. Thus, these jackpots are often billed as "mystery jackpots" since the conditions that cause them to be paid do not depend on achieving any specific result in the main game. Furthermore, it is not usually necessary to bet the maximum amount possible (or, often, to even bet any minimal amount above the minimum wager allowed by the software) in order to win a "mystery jackpot" - although since it is a percentage of each wager that goes into the jackpot the odds of winning on a particular spin are usually in proportion to the amount of the bet. Or, to put it another way, one spin for twenty dollars would have the same odds