Craps in London had been the joint epithet for the numbers two and three, which in hazard are the only permanent instant losing numbers for wagers on Pass. For a century after its invention, craps was abused by casinos using unfair dice. To remedy the problem, in approximately 1907, a Philadelphia dice maker named John H. Winn introduced a layout which featured bets on both Pass and Don't Pass. Most modern casinos use his innovation. Craps exploded in popularity during World War II, which brought most young American men of every social class into the military. The street version of craps
Dice notation on both dice may be interpreted as either 0 or 100, depending on the game rules. The "d1000" (using three 10-sided dice) is occasionally also seen, although it is more common in wargames than role-playing games. A number of notational strategies exist for discarding only certain types of results. Some games extend the standard notation to A"d"X"(k"Y")+"B where, in addition to the above, Y is the number of dice kept (k) from the roll. Whether the dice omitted are the highest, lowest, or the player's choice depends on the game in question. 7th Sea and Legend of the Five Rings