I'm not sure who play tested this game, but it doesn't look like there was anyone. You really need to play-test these games to make sure they play right. As is, The ship moves way too slowly. The tubes quickly fill up, leading to lost aliens and lost lives. And the tubes that transport the aliens is way, way too slow. When you get random aliens, and too many of one kind, who fill up not only the tubes on both ends, but the ship as well, there is no way to win the game. This is just piss poor.