Craps Portable - Version 1.5 Craps Portable - download and play. No installation needed.Craps (previously known as crabs) is a casino dice game. Craps is a simplification of the Old English game hazard. Its origins are complex and may date to the Crusades and was influenced by French gamblers, who probably first brought, what was to become the modern American version of the game, to New Orleans, where its popularity was thought to spread from the African-American community. Players wager money against the casino on the outcome of one roll, or of a series of rolls of two dice. Craps can also be played in less formal settings and is said to be popular among soldiers. In such situations side bets are more frequent, with one or several participants covering or "fading" bets against the dice.