Xenophobe
Xenophobe is an arcade game from 1987. The aim of each level is to defeat all the aliens before time runs out. The levels can have more than one floor and players use elevators or holes to move between floors and defeat all the aliens. Players can also collect more powerful weapons and other items to help them eradicate the aliens.
Story
Star bases, moons, ships and space cities are infested with aliens and players must kill the aliens before they are completely overrun.