N.Y.C. Admin. Code § 20-451: § 20-451 Unlawful games of chance.

Any person, association, corporation or organization holding, operating, or conducting a game or games of chance is guilty of a misdemeanor, except when operating, holding or conducting:

(a) in accordance with a valid license issued pursuant to this subchapter, or

(b) on behalf of a bona fide organization of persons sixty years of age or over, commonly referred to as senior citizens, solely for the purpose of amusement and recreation of its members where (i) the organization has applied for and received an identification number from the board, (ii) no player or other person furnishes anything of value for the opportunity to participate, (iii) the prizes awarded or to be awarded are nominal, (iv) no person other than a bona fide active member of the organization participates in the conduct of the games, and (v) no person is paid for conducting or assisting in the conduct of the game or games.