You've just invaded earth, and now it's your job to bring back some souvenirs! Fly your space ship through 20 levels, grabbing critters, stealing stars, and avoiding obstacles, like spikes, mines, and electric fields, to get your booty to the transport area. Use your strategy skills to win tokens and 10 medals when you play Alien Thief online today! Instructions Use the arrow keys or WASD to move. Use the space bar or left mouse button to activate the lift-beam and grab critters. Bring the critters to the transport pad and let them go. Collect all the designated animals to unlock the next level.