A "World Bet" or "Whirl Bet" in craps is a type of proposition bet that combines several individual bets into one wager. Specifically, the World Bet includes: A Horn Bet (2, 3, 11, 12) paying off at 27:4 odds; Any 7 also paying 4:1; Any Craps (2, 3, 12) also paying 7:1.  So it essentially combines the Horn Bet with bets on 7 and the Craps numbers into one single wager. The World Bet costs $5 for a $1 unit bet. It has a very high house edge of around 13.7%, making it one of the worst bets on the craps table from a mathematical perspective.