A lone pilot must destroy an alien fleet that has invaded Earth's solar system. The alien space ships, known as 'Dreadnoughts', are patrolling the sky and it's up to the player to take them down before they cause any more damage.
The game is played from a top-down perspective, where the pilot can move their ship left or right, shoot at incoming aliens, and destroy enemy ships. The goal is to defend Earth's solar system from the alien invasion by destroying all of the Dreadnoughts.