Substitute
![game](https://files.flashgames.cx/images/mJLKZ8qdl8pkl2zIaF5mlsuYY2uYmnGOmJaUlGduy8dsYcpp.jpg)
During World War III, the United States was creating a powerful biological bomb that resulted in the mutation of a lot of creatures. Protect your city against these baddies in this addictive tower (turret) defense game.
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