Game Description: The story behind the Zapxo Defense flash game is that its been thousands of years since the Zap people were all killed by humans. But now in Zapxo Defense they are back from the dead and seeking revenge. The Zapxo Defense flash game will put you through 20 levels to test your defence skills. Kill the Zaps and earn points to upgrade your weapons and tower defenses. Its up to you to use your best strategy to save the planet. If you don"t set up your defences in the best places you will not last long in Zapxo Defense. Good luck. The world is counting on you.