Someone, or something, has taken over the Earth's central defense computer. It's up to you to force your way through hordes of fighting machines, sent by the captured computer, and return control to the rightful owner before it's too late! You'll have a vast arsenal at your disposal with many upgrades and bonus weapons to find along the way. So prepare for a mission that will have you battling in hyperspace, on planet surfaces and even underground in this fantastic shooter!