I never know how alien move. Are they jumping, running, or flying? But in this game, the alien must jumping (or flying) to move from one place to another. You must help them to predict the angle and the power. Use your mouse to point the power and angle diagram. If you choose the right angle and power, the alien will move from one spaceship to another. If not, he will lose one live. You have 10 live to fight. Collect 5 crystal, and you’ll get extra live. You can’t jump to the previous spaceship, so don’t do that..