World in Danger Earth Attack

Tap on the screen to launch the game. Turn the Earth by moving your finger or mouse to aim at the invading planets. Stop to shoot the Earth's weapons at the enemies. Collect power-ups to enhance your weapons and raise your shooting speed. Evade incoming attacks from the enemy planets to keep going. Eliminate all invading planets to advance to the next level. Utilize the moon's help when available to double your firepower. Watch out for the increasing speed and number of enemies as you progress through the levels.