There was an Intellivision game called Microsurgeon, later ported to the TI-99/4A, that saw you controlling a tiny probe swimming through a patient... you had t

There was an Intellivision game called Microsurgeon, later ported to the TI-99/4A, that saw you controlling a tiny probe swimming through a patient... you had to zap the viruses and bacteria with appropriate treatments while navigating the patient's body. It's cool to see reality approaching such high-concept stuff.