Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself.
In modern culture. 1  Perks and Tit, a live album released by Deep Purple. 2  Perks, a game mechanic in video games. 3  PERQ, a workstation computer.
Most perks have both a skill level requirement and a prerequisite perk that must first be unlocked to make the perk available. 1  When a prerequisite perk has more than one rank, only the first rank needs to be unlocked to make the next perk available.