Substitute Game - Free Flash Games
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Substitute Game

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.

Game Instructions

Use your Mouse to Move the Turret, Left Click your Mouse to Shoot, and upgrade your turret by Left Clicking on it.

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Works on html5 modern browsers.