The earth are in danger !!! Every asteroid, comet and alien thing in universe are turn against our earth. They are everywhere, the earth are being attack in every direction. With our at most technologies the President command you to prevent this apocalypse. "Destroy every unknown subject that came near our earth, in all cost!!!" thats his command.
Obviously this is an addictive, quick but tricky games for iphone, ipad, imac and ipod touch. With awesome 3D graphics space view and cool background music and soundFX.
Finally, The Earth Defender's have 4 super weapon: