Shin Super Robot Taisen

Story

The game begins when the military has detected a large energy signature - far *too* large. The source becomes apparent quickly: one of the colonies around Mars just exploded. And what's worse, more colonies are under attack from beam cannonry borne by unknown flying adversaries. In short order, the entire constellation of Martian colonies is wiped out, and the commander runs off to make his report, yelling to his subordinates not to take their eyes off the unidentified enemy. Some observers thinks to themselves that, had they but a little more time, Earth's warpower could have been organized ...