Your mission in this tactical online game is to use your virtual arsenal to prevent the waves of viruses from destroying the servers firewall. the viruses themselves come in a variety of types, colors and sizes. the larger and more advanced viruses are harder to kill but provide a larger bounty. by strategically choosing, placing and upgrading towers along the network path you might be able to destroy them before they reach the firewall. use your mouse to control the game. you can hold down spacebar to see the life meters of all the viruses and you can hold down the shift key to build multiple towers of the same type. good luck!
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