A system for dynamically serving ads to one or more client devices in connection with the operation of an executable program operating at the one or more client devices, the system comprising:a network interface disposed to receive an ad request associated with a device fingerprint that uniquely identifies a client device, the ad request comprising information relating to any one or more of the client device, a user operating the client device and an executable program operating on the client device;a memory holding program instructions operable for parsing the information in the ad request, selecting one or more ads based at least in part on the parsed information, and transmitting ad rendering data to cause the one or more ads to be displayed at the client device; anda processor, in communication with the network interface and the memory, the processor configured for operating the program instructions.
