The progress of a game of Craps is marked with a plastic "puck", which is black on one side (OFF) and white on the other (ON) The first roll of the dice in a round of Craps is called the come-out roll. The puck is turned black side up (OFF) during the come-out roll. The basic opening bet in Craps, placed just before the come-out roll, is called a Pass Line bet. The Pass Line bet wins immediately if the come-out roll is 7 or 11 (natural), and loses when the come-out roll is "Craps" (2, 3, or 12) If a 4, 5, 6, 8, 9, or 10 is rolled on the come-out roll, that number becomes the point. The puck is placed on the Craps layout over the box displaying the numbered rolled as the point with the white side up (ON) The shooter now keeps rolling the dice until either the point is repeated or a 7 is rolled to end the round. If the point repeats first, the Pass Line bet wins. If a 7 is rolled first (seven out), the pass line bet loses.

Think about it. When you toss a coin fairly you will get an even number of heads and tails in the long run. Every now and then you will get a run of four or five heads or tails, just by chance. After all, every time you toss there is a 50:50 chance of a head or tail coming down – and this doesn’t change depending on what the tosses before have been. If runs of 4 or 5 heads happen, it means that runs of 10 or even 20 can and will happen. Not very often at all, but they will happen. winning and losing streaks are what you can expect occasionally, just by chance. They do not need to be explained by ESP, magic or superior betting skill.

Some gamblers believe that you can recover your losses by doubling your bet every time you lose. This is known as the Martingale system. The idea is that when you win, the win will be big enough to cover your previous losses. There are two problems with this system: You may run out of money before you win. You can only double your bet so many times because of table limits, and so occasionally you will hit the table limit before winning – and this will be very expensive.