The Dreadnaught Factor 
Intellivision
Shoot'em Up
 
The facts say it's impossible... for your planet, it's imperative! Zorban Dreadnaughts, the largest, most heavily-armored battlecraft ever, approach the planet Terra. As a pilot of the sleek Novaray Hyperfighter, you have defeated all prior intergalactic adversaries. But this time... you wonder.