You are a lone gun battery located on an asteroid in distant space. The enemy has a fleet of robot drones sent to destroy you by crashing into you. Take out as many drone ships as you can before you are destroyed.
Build up energy to use perks to help destroy the enemy drones. Enter A, S, and D in combinations of three to activate perks. You will get a visual and audio notification of an active perk. Perks are time sensitive.. You start with energy to activate one perk. Use them wisely. Tips on the title screen are helpful.