Defen-G Astro

"Defen-G Astro is an action defense game based on a horizontal scroll system. It is equipped with charming characters and various funtions, enabling the player to make a stylish and breathtaking game play. In this game, the player must defend "Atea", the Tower of Life, from collapsing against the invading enemy troopers by placing units in a strategic manner" Source: The Developer Website.