Fantasy Submarine Game 3.1

It's been years that the underwater monster gives no rest to people. It's sinking submarines, commercial crafts, and even comes out of the sea on land with no one to stop it. You and your submarine are the stronghold for the whole humankind. The underwater world is full of dangers and adventures, you're a stranger here, and the monster is in his home, and not alone. The best defense is an attack! Go ahead, brave captain!