Supa Nova

Supa Nova is a bit of a cross between two old Atari games; Asteroids and Missile Command. As in Missile Command, your job is to kill the enemy objects by laying an obstacle in their course, but with the difference that you don't have any ground missile bases to do so. Instead, as in Asteroids, you move your sprite in space, and makes it lay out space mines in the path of the enemies. And when they run into a mine, they split into two, just as in Asteroids.