I have been playing Plague Inc.: Evolved, which is pretty good, if a bit formulaic across the diseases in a way that makes differences seem like inconsistencies rather than variety.
Greenland, though. Man, Greenland. Greenland is the Madagascar of this game.
I can recommend the PC version. I do not recommend the mobile version, which is a bit heavily ad-ware, although maybe that goes away if you give them a dollar? There were too many screens asking me for money to skip things.