Sleeping Dogs catapults players into the role of undercover cop Wei Shen, tasked with taking down one of the worlds most fearsome criminal organisations from the inside. . . The Hong Kong Triads. Suitable for the PS4. This game is classified as certificate 18. It contains content unsuitable for persons under 18 years old. It is illegal to supply it to anyone under that age. DO NOT attempt to purchase the item if you are under 18. For ages 18 years and over.