Lasers, spaceships, missiles and explosions in 9 levels of screen tapping action. The player's spacecraft starts off with a single laser and basic shields. If you score more than 1000 points your subsequent ships will be upgraded to dual lasers and full shielding. The enemy ships are very basic at the start but can still inflict heavy damage to the player's spaceship. Those enemies with shields will take several hits to secure their explosive destruction. Each successful hit is seen as a blue flare against the enemy shielding. As the levels progress they become more formidable with your targets gaining improved shields and dual lasers. The highest levels include ships that fire missiles which can home in on your craft's position.