In Craps, winning or losing depends on a variety of different possible outcomes on any roll of the two dice. The two dice can produce many different number combinations; some can be made several ways, others only one way. For example, two dice can roll the number 6 as follows: 5/1, 4/2, 3/3, 2/4 and 1/5. But the number 2 can only be rolled one way: 1/1.

Button Descriptions Roll: Clicking on the Roll button after placing a bet starts a new round. Repeat: Clicking on the Repeat button will repeat all the bets made on the previous round that can be validly placed now. Clear: Clicking on the Clear button removes all the bets on the table that can be removed. Most bets can be removed, added to, or deducted from at any time. Exceptions would be the pass and come bets, and you cannot exceed the maximum bet on the odds. Table Min/Max: Look here to find the minimum and maximum total of the bets allowed. Bet Regions: When moving the cursor over the bet regions a yellow “tag” will appear that gives the name of the bet, the current amount placed for that bet, and the minimum and maximum amounts that can be placed on that bet. If a green highlight appears in a region, that indicates this bet can be added to (changed) If a red highlight appears, this bet cannot be increased (but sometimes can be removed)

According to Richard Epstein, craps is descended from an earlier game known as Hazard, that dates to the Middle Ages. The formal rules for Hazard were established by Montmort early in the 1700s. The origin of the name craps is shrouded in doubt, but it may have come from the English crabs, or from the French Crapeaud (for toad)