Inten Sub is a shooting game on www.flash-game.net in which you control a submarine to shoot torpedoes in blue ocean. You can select four modes, easy, normal, hard and brutal. Click your left mouse button and hold it to shoot out bullets. A number of enemy ships are floating over your head. They frequently release bombs into the sea. So you have to move left and right for avoiding hitting those bombs. Once your submarine is shot by a bomb, your health will decrease. Try to eliminate enemy boats as more as possible. You may also collect items to become invincible or recover your health. Practice your skill in easy mode. And have a fierce challenge in brutal mode. Go to fight now!