Petri Plate Potpourri

On this NES/Famicom game you are a laboratory assistant. Your laboratory is studying some microscopic creatures in Petri plates, but they have been contaminated by "impostor" organisms, which try to mimic the real creatures. You need to examine these Petri plates with a microscope and inject antibiotics on the impostors. You can recognize an impostor by looking at the creatures on the plate - t…