Orro2008 the alien fighter

Features Orro2008 the alien fighter

Game purpose:Kill all aliens before they get you.Win with fastest time and with highest score possible.
Instructions:To start , first you must select difficulty level (between 1 - 9)Tap anywhere on the blue area of screen to shoot at alienTap on bottom green area to move player ship.You start with 3 lives.
Each time you are hit you loose one life.Hitting alien gives 10 points.Hitting a ghost alien gives you another life.Hitting ufo gives 100 points.Best score is measured by both best time and highest points.Each level has its own best.