Terms & Conditions / Privacy Policy. The South Dakota Lottery is a division or the South Dakota Department of Revenue and Regulation. You must be 18 years or older to play Scratch and Lotto games. You must be 21 years or older to play Video Lottery. Please play responsibly. Every effort has been made to ensure the accuracy of the winning numbers and prize payouts. The Lottery reserves the right to correct errors. In the event of a discrepancy the official and certified files maintained by the South Dakota Lottery shall prevail.