Parasitic Invasion

An infection mod that adds a parasitic organism called the necro, which eventually destroys the entire world. Fight infected farm animals and stop them from becoming too strong. Late phases of the necro can create nests which command nearby necros to do its bidding. The nests can also create massive juggernauts that call nearby necros to fuse with their early form, and after it gains enough biomass, it will rise and murder nearby stuff.