Description: You can move along the bottom line with mouse and shoot up at the advancing aliens with clicking the left mouse button. They will shoot back, so you should be prepared to dodge. Try to keep them at bay and go to the next level. Instructions: You can move along the bottom line with mouse and shoot up at the advancing aliens with clicking the left mouse button. They will shoot back, so you should be prepared to dodge. Try to keep them at bay and go to the next level. Controles: movement: mouse
