Operation Earth First Contact电脑版

Operation Earth - Defend the Earth from its first alien encounter using the Earth Defense Weapon in this action packed space shooter. Figure out which combination of weapons you should use to best protect the Earth in each mission.INSTRUCTIONS:Tap – to ShootTap / Drag – Rotate EDWTap - to select weaponSpecial Weapons:Triple Shot – Tap on icon to active.Plaa – Tap on icon to active.Lightning – Tap to active.Bonus Defense – Tap to active.Satellites – Tap to active.Note: You can tap on each weapon name in the upgrade screen to view its upgrade tree description, strengths and weaknesses.