Machine-readable media, methods, and apparatus are described for dynamic content play control. In some embodiments, a client device (11) may receive a mark associated with a content piece from a remote system (10) connecting with the client device (11) through a network. The client device (11) may determine whether to play the content piece by checking the mark with a policy table comprising a plurality of marks. The policy table may indicate whether each of a plurality of content pieces associated with each of the plurality of marks is acceptable for play.