You play as a virus cell and your target is simple: Infect as many blood cells as possible to contaminate the whole human body reaching the highscore. Simply tap and hold your finger to lock the direction and speed of infection.
Collect white blood cells to upgrade your virus. The game shop contains many different cell types, i.e:
Zombie, Monkey or Vampire Virus
...and many more!
So, how many blood cells can you kill without rage?