It is a 3d game with nice graphics and effects. you have to control a military ship that destroys enemy submarines. The game is easy at the very beginning but mission after mission you will be facing more cruel enemies. There are 5 different submarines in the game and each will try to kill you using various methods with the help of regular and ultra fast mines and torpedos.Bonuses and the store will help you. when you destroy the enemy you get bonus and scores that you may spend in the store bying lives, shields, mines. 10 levels are available in an unregistered version. the full version consisits of 30 levels