shooting game ~Fall the UFO!~

Aliens have invaded Earth!!! Don't let that happen! You save the earth! Easy to use Since there is a sight in the upper right of the screen, do not miss the moment when the UFO overlaps there Just tap the screen! Then the missile will fly towards the target. If you miss 4 times, it's game over. However, there is something good if you can defeat a rare UFO! Now, let's compete with defense forces around the world for your score!