Defend against the viruses with Mr Antibody. Click to attack and kill currently killable viruses. Move your mouse to move and aim him Avoid hitting the viruses or you will loose a life Click to attack and kill currently killable viruses. Killable viruses are indicated at the top If you pickup pills you would be able to fry all the viruses you touch for a limited time Meet the level target to level up You can upgrade at the level up page which enables you to fry selected enemies by touch Lets defend.