Absolute Zero

There's a new alien race on the prowl, and you've got to help the people escape before it's too late. Using a series of unique vehicles, you'll transport citizens to safety while using an array of weapons to fend off extra-terrestrial attackers. There are a total of 30 missions to keep you occupied, and three different environments in which all of the action takes place: space, land, and beneath the moon's surface. Space travel might be easy in the 24th century, but battling aliens is still difficult.