This is what Final Legacy is all about. The world was almost completely destroyed, and the only heavy cruiser remained at the disposal of the command. With it, you need to chase and sink enemy ships until they completely destroyed the world.
Final Legacy was accidentally found and first demonstrated at World of Atari '98 in Las Vegas. Completely unfinished game, largely identical to its computer version. For Atari 8-bit there were 2 variations of this game. They differed in text / icons in the menu.