Prior to 2018, Delaware was one of only four jurisdictions where wagering on sports was legal under federal law, although it had not permitted such betting since a game based on final scores in the National Football League (NFL) was available for only the 1976 season.

However, a bill was signed by the Governor of Delaware in May 2009 that is much broader than the previous sports wagering law.

In January 2010, legislation was passed legalizing Lottery-owned table games at Delaware's three racetrack casinos ("racinos".)

As Delaware's liquor stores do not allow underage persons in them, the minimum age to purchase tickets in such establishments is effectively 21.

On May 14, 2018, the U.S. Supreme Court struck down the ban on sports betting in the case Murphy v. National Collegiate Athletic Association.

On June 5, 2018, the Delaware Lottery expanded sports betting to single-game and championship wagers on professional and college sports (excluding Delaware college teams) including football, baseball, basketball, hockey, soccer, boxing/MMA, golf, and auto racing.

[1][2][3] Parlay betting on NFL and college football games (excluding Delaware teams) is available at retailers throughout the state.

Lotto America is available through 13 lotteries, including Delaware's, and is drawn Wednesdays and Saturdays.

Lotto America also has an option called All-Star Bonus that multiplies non-jackpot prizes by 2, 3, 4, or 5.

In January 2015, Delaware began selling Lucky For Life, a lesser multi-state game with a $2 price.

The Delaware Lottery added Mega Millions on the date of the cross-selling expansion, January 31, 2010.

[citation needed] Hot Lotto was available through 15 lotteries, including Delaware's, and was drawn Wednesdays and Saturdays.