Wyo. Stat. Ann. § 9-17-121

Any person who knowingly sells a lottery ticket or share to a person under eighteen (18) years of age or permits a person under eighteen (18) years of age to play any lottery game shall be guilty of a misdemeanor and shall be fined not less than one hundred dollars ($100.00) nor more than five hundred dollars ($500.00) for the first offense and for each subsequent offense not less than two hundred dollars ($200.00) nor more than one thousand dollars ($1,000.00). It shall be an affirmative defense to a charge of a violation under this section that the retailer reasonably and in good faith relied upon representation of proof of age in making the sale.