Space Station Zulu

You are in command of Space Station Zulu and its 43 man crew orbiting a huge
gaseous giant in a farflung corner of the galaxy. Shortly after an exploration
ship leaves the station the onboard computer notifies you that the sanctity of
the station has been violated by unknown alien lifeforms ( which find your
crew very tasty). Now you must direct your crew in a desperate struggle
against this deadly peril. There is only one way to win and that is to rid
Space Station Zulu of all the alien intruders. The aliens win by taking over
the ship. There are 3 levels of difficulty (normal, difficult, and little
hope) and this is a one player versus the computer game.