Infectonator

You have a zombie disease at your disposal. You choose when to release it and then watch the carnage unfold. The aim is to meet the required amount of infection in each level before the spread is quelled by their death, or by the forces of good.

You get money for infections. You can buy all sorts of upgrades to help spread the infection more quickly and more effectively. You can even buy grenades to add an extra does of pure, triple-filtered, ass-whupping!

Use the mouse to release the beast.

Pick your moment for release, and be careful if you have grenades because a misplaced double click could ruin your chances of spreading the disease successfully.