S.D. Codified Laws § 42-7A-44
The placement of video lottery machines in licensed establishments shall be subject to the rules of the commission promulgated pursuant to chapter 1-26. No more than ten video lottery machines may be placed in any licensed establishment. The bar or lounge with an on-sale license issued pursuant to subdivision 35-4-2(12) or (16) shall be restricted to persons twenty-one years of age or older. The entrance to the area where video lottery machines are located shall display a sign that the premises are restricted to persons twenty-one years or older. Notwithstanding the restrictions in § 35-4-79, persons under the age of twenty-one may only enter the premises where video lottery machines are located provided they are accompanied by a parent, guardian, or spouse of twenty-one years or older.
SDCL 42-7A-44