Arcade space shooter based on the arcade coin-op of the same name.
This port was the first Atari 2600 game to use port switching, a technique used to increase the available memory from 4 KB to 8 KB.
Your spaceship is trapped in a deadly asteroid belt. You will have to destroy the drifting asteroid boulders before they destroy your spaceship. But, watch out for enemy spacecraft. Fire your missiles to destroy the boulders and the enemy.