Z-Infect

Mankind could not fight the virus that turns people into bloodthirsty zombies. If you can't defeat the virus, you can use it to your advantage and become the leader of the living dead. Think, because they will unconditionally obey all your orders. However, to become a leader, you must infect all the people on the planet while remaining fully healthy yourself. Send undead on healthy people and soon your army will be replenished with more warriors.