Yes. DraftKings Casino is live with real money betting in Michigan, New Jersey, Pennsylvania, Connecticut, and West Virginia. As long as you're 21 or older and in one of those states (even if you don't live there), you can play at DraftKings Casino for real money.
DraftKings Live Dealer tables are generally available 24 hours a day. All other tables are generally available from 11am until 3am with the exception of all roulette games and Infinite Blackjack, which are also generally available 24 hours a day.
Select 5 regular numbers from 1 70 and 1 Mega Ball number from 1 25. You can select the Quick Pick option or choose your own lucky numbers. To win the jackpot, match all five numbers (order doesn't matter) and the Mega Ball.
The Mega Millions jackpot is won by matching five white balls, in any order, plus the one yellow Mega Ball number. The second-level prize of $1 million is won by matching all five white balls, known as a Match 5. You can win seven additional ways by matching fewer numbers (see Prizes & Odds chart for details).
However, it is against Roblox rules to implement any gambling or casino style games that involve real money in any way, including Robux, as Robux can be purchased for real money.
Blackjack and 21 are essentially the same game, with the objective being to reach a hand value of 21 or as close to it as possible without going over. In some cases, the term "21" may be used to refer to the game played in a casual setting, while "Blackjack" is often used in a casino context.