A virus called COVID is spreading across the World Wide Web and infecting people through their computers. Medical technology now allows direct control of immune system cells via the Internet. Use your white blood cell paddle to deflect viruses away from the patient's lungs — but other intercell agents are also in the network and cannot be trusted. Destroy them by sending them as many viruses as possible. Be the last cell remaining to save the patient. A competitive arcade game about the immune system.