Virus Wars is a fun game in which you have to help the body's immune system to fight off causative organism and you can play it online and for free on Silvergames.com. Send out your troops to take over enemy viruses before they can infect the whole life form.
With every new cell that you take over, you will be able to produce more antibodies that you can use to attack the infected cells. You win, when every cell in the level is yours. Enjoy this enthralling strategy game Virus Wars!