The jackpot is estimated 325-million dollars but could go higher, depending on ticket sales.
If there is no winner tonight the jackpot could soar well past 400-million bucks before the next drawing.
Mega Millions is played in 12 states. The only one that borders Arkansas is Texas.
Starting on October 31st, Arkansans will be able to buy tickets in the only other multi-state lottery, the Powerball.