• The 4D lottery is a form of betting by selecting a 4-digit number between 0000 to 9999 (hence its name). Every lottery draw will draw 23 sets of 4-digit winning numbers, which includes the first, second and third prizes, starter prizes and consolation prizes. Any bets on the numbers drawn will result in prize money.
• Betting on the “Big” category meant the players could win the first, second and third prizes, starter prizes and consolation prizes. Betting on the “Small” category meant that the players would only win if their numbers came up as the first, second and third winning numbers.
• Gambling was prevalent in Singapore since the late nineteenth century during the British colonial era, until the operations of gambling dens and betting houses were ceased in 1959.
• In 1968, Singapore resumed legalised gambling. The Singapore Turf Club and the Singapore Pools, supervised by the Singapore Tote Board, conducted legalised gambling activities.
• The Singapore Pools manages the Singapore Sweep, sports betting, horse betting, Toto betting and 4D betting. 4D betting was incorporated into the betting arena in 1986.

彩票（Mainland China）, 六合彩（Hong Kong）, 彩券（Taiwan）