Plague Inc is an awesome iOS game that involves you controlling
different diseases, including viruses, fungi, parasites, prions, and fictional diseases, such as neurax worms, and necroa viruses. When you start, you choose what
country to infect, and with DNA points, you can upgrade transmissions, symptoms, and abilities to try to infect and kill every human on Earth. It has generally pretty
popular, on the App Store and extremely fun.
"Have you unlocked nano-viruses
yet on Plague Inc?"
No, not
yet, I'm still working on parasites, but it's still
really fun."