Astroblast

The Intellivision game catalog features the exciting caption, "Spin. Blast. And drop into hyperspace to avoid a killer asteroid shower. Power on. Attack computer engaged. Fire a quick burst at the alien antagonists. Got 'em!" The actual package gives a more specific description: "You're in command of a battery of laser guns. You have unlimited ammo and a lot of targets! You can roll up big scores by hitting a spectactular barrage of falling rocks, bombs, guided missiles and attacking UFOs..."