A Dakota Cash ticket sold in Sioux Falls matched all five numbers in Saturday's drawing to win the game's $40,925 jackpot.
The South Dakota Lottery says the winner has about six months to claim the prize.
The odds of winning the game's jackpot are about one in 325,000.
Dakota Cash in played only in South Dakota. The jackpot starts again at $20,000 for Wednesday's drawing.
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