Zombie Mission 13
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Shot Factor
Shot Factor is a free casual shooting online game for boys. The game takes the familiar shooting as the core, but the entry mode is unique. Before fighting, you need to upgrade your gun. You can improve the lethality of the gun by using various squares with numbers and then make the numerical formula result bigger as possible, so as to help you quickly destroy the enemy. Show your skills to everyone! Keep breaking the challenge, good luck!
